diff --git a/cloudinit/cmd/main.py b/cloudinit/cmd/main.py
index a2851a2682c..d1ff6ba7660 100644
--- a/cloudinit/cmd/main.py
+++ b/cloudinit/cmd/main.py
@@ -91,17 +91,6 @@ def print_exc(msg=""):
     sys.stderr.write("\n")
 
 
-DEPRECATE_BOOT_STAGE_MESSAGE = (
-    "Triggering cloud-init boot stages outside of intial system boot is not a"
-    " fully supported operation which can lead to incomplete or incorrect"
-    " configuration. As such, cloud-init is deprecating this feature in the"
-    " future. If you currently use cloud-init in this way,"
-    " please file an issue describing in detail your use case so that"
-    " cloud-init can better support your needs:"
-    " https://github.com/canonical/cloud-init/issues/new"
-)
-
-
 def welcome(action, msg=None):
     if not msg:
         msg = welcome_format(action)
diff --git a/cloudinit/config/cc_growpart.py b/cloudinit/config/cc_growpart.py
index 4815b14a9b9..141d2d1d9da 100644
--- a/cloudinit/config/cc_growpart.py
+++ b/cloudinit/config/cc_growpart.py
@@ -27,8 +27,6 @@
 from cloudinit.distros import ALL_DISTROS, Distro
 from cloudinit.settings import PER_ALWAYS
 
-MODULE_DESCRIPTION = """\
-"""
 frequency = PER_ALWAYS
 meta: MetaSchema = {
     "id": "cc_growpart",
diff --git a/cloudinit/config/cc_grub_dpkg.py b/cloudinit/config/cc_grub_dpkg.py
index 7107f1fe3c2..b24d50b05dc 100644
--- a/cloudinit/config/cc_grub_dpkg.py
+++ b/cloudinit/config/cc_grub_dpkg.py
@@ -18,8 +18,6 @@
 from cloudinit.settings import PER_INSTANCE
 from cloudinit.subp import ProcessExecutionError
 
-MODULE_DESCRIPTION = """\
-"""
 meta: MetaSchema = {
     "id": "cc_grub_dpkg",
     "distros": ["ubuntu", "debian"],
diff --git a/cloudinit/config/cc_landscape.py b/cloudinit/config/cc_landscape.py
index e22757a5e5a..ea208c19961 100644
--- a/cloudinit/config/cc_landscape.py
+++ b/cloudinit/config/cc_landscape.py
@@ -20,7 +20,6 @@
 from cloudinit.settings import PER_INSTANCE
 
 LSC_CLIENT_CFG_FILE = "/etc/landscape/client.conf"
-LS_DEFAULT_FILE = "/etc/default/landscape-client"
 
 # defaults taken from stock client.conf in landscape-client 11.07.1.1-0ubuntu2
 LSC_BUILTIN_CFG = {
diff --git a/cloudinit/config/cc_reset_rmc.py b/cloudinit/config/cc_reset_rmc.py
index 44264cf524f..c6ce4881c53 100644
--- a/cloudinit/config/cc_reset_rmc.py
+++ b/cloudinit/config/cc_reset_rmc.py
@@ -3,20 +3,8 @@
 # Author: Aman Kumar Sinha <amansi26@in.ibm.com>
 #
 # This file is part of cloud-init. See LICENSE file for license information.
-"""Reset RMC: Reset rsct node id"""
-import logging
-import os
-
-from cloudinit import subp, util
-from cloudinit.cloud import Cloud
-from cloudinit.config import Config
-from cloudinit.config.schema import MetaSchema
-from cloudinit.distros import ALL_DISTROS
-from cloudinit.settings import PER_INSTANCE
+"""Reset RMC: Reset rsct node id
 
-# Since this module is undocumented, this variable is unused.
-# Keeping it here for documentation purposes
-MODULE_DESCRIPTION = """\
 Reset RMC module is IBM PowerVM Hypervisor specific
 
 Reliable Scalable Cluster Technology (RSCT) is a set of software components,
@@ -36,6 +24,15 @@
 
 Prerequisite of using this module is to install RSCT packages.
 """
+import logging
+import os
+
+from cloudinit import subp, util
+from cloudinit.cloud import Cloud
+from cloudinit.config import Config
+from cloudinit.config.schema import MetaSchema
+from cloudinit.distros import ALL_DISTROS
+from cloudinit.settings import PER_INSTANCE
 
 meta: MetaSchema = {
     "id": "cc_reset_rmc",
diff --git a/cloudinit/config/cc_ubuntu_pro.py b/cloudinit/config/cc_ubuntu_pro.py
index d39a0fa4acc..81acf0439d2 100644
--- a/cloudinit/config/cc_ubuntu_pro.py
+++ b/cloudinit/config/cc_ubuntu_pro.py
@@ -14,7 +14,6 @@
 from cloudinit.config.schema import MetaSchema
 from cloudinit.settings import PER_INSTANCE
 
-PRO_URL = "https://ubuntu.com/pro"
 DEPRECATED_KEYS = set(["ubuntu-advantage", "ubuntu_advantage"])
 
 meta: MetaSchema = {
diff --git a/cloudinit/config/cc_yum_add_repo.py b/cloudinit/config/cc_yum_add_repo.py
index 308e5d603c1..f20f7ea0018 100644
--- a/cloudinit/config/cc_yum_add_repo.py
+++ b/cloudinit/config/cc_yum_add_repo.py
@@ -17,19 +17,6 @@
 from cloudinit.config.schema import MetaSchema
 from cloudinit.settings import PER_INSTANCE
 
-COPR_BASEURL = (
-    "https://download.copr.fedorainfracloud.org/results/@cloud-init/"
-    "cloud-init-dev/epel-8-$basearch/"
-)
-COPR_GPG_URL = (
-    "https://download.copr.fedorainfracloud.org/results/@cloud-init/"
-    "cloud-init-dev/pubkey.gpg"
-)
-EPEL_TESTING_BASEURL = (
-    "https://download.copr.fedorainfracloud.org/results/@cloud-init/"
-    "cloud-init-dev/pubkey.gpg"
-)
-
 meta: MetaSchema = {
     "id": "cc_yum_add_repo",
     "distros": [
diff --git a/cloudinit/config/schema.py b/cloudinit/config/schema.py
index 769e5ade3ab..ecdb6d7a1c1 100644
--- a/cloudinit/config/schema.py
+++ b/cloudinit/config/schema.py
@@ -55,8 +55,6 @@
 # If we change the location of versions.schema.json in github, we need
 # to provide an updated PR to
 # https://github.com/SchemaStore/schemastore.
-VERSIONED_USERDATA_SCHEMA_FILE = "versions.schema.cloud-config.json"
-
 # When bumping schema version due to incompatible changes:
 # 1. Add a new schema-cloud-config-v#.json
 # 2. change the USERDATA_SCHEMA_FILE to cloud-init-schema-v#.json
@@ -638,7 +636,6 @@ def netplan_validate_network_schema(
                 _, marks = safeyaml.load_with_marks(src_content)
                 print(
                     annotated_cloudconfig_file(
-                        net_cfg,
                         src_content,
                         marks,
                         schema_errors=errors,
@@ -811,11 +808,9 @@ def validate_cloudconfig_schema(
 class _Annotator:
     def __init__(
         self,
-        cloudconfig: dict,
         original_content: str,
         schemamarks: dict,
     ):
-        self._cloudconfig = cloudconfig
         self._original_content = original_content
         self._schemamarks = schemamarks
 
@@ -916,7 +911,6 @@ def annotate(
 
 
 def annotated_cloudconfig_file(
-    cloudconfig: dict,
     original_content: str,
     schemamarks: dict,
     *,
@@ -934,7 +928,7 @@ def annotated_cloudconfig_file(
 
     @return Annotated schema
     """
-    return _Annotator(cloudconfig, original_content, schemamarks).annotate(
+    return _Annotator(original_content, schemamarks).annotate(
         schema_errors or [], schema_deprecations or []
     )
 
@@ -1111,7 +1105,7 @@ def validate_cloudconfig_file(
         if annotate:
             print(
                 annotated_cloudconfig_file(
-                    {}, content, {}, schema_errors=schema_error.schema_errors
+                    content, {}, schema_errors=schema_error.schema_errors
                 )
             )
         raise schema_error from e
@@ -1161,7 +1155,6 @@ def validate_cloudconfig_file(
         if annotate:
             print(
                 annotated_cloudconfig_file(
-                    cloudconfig,
                     content,
                     marks,
                     schema_errors=errors,
diff --git a/cloudinit/distros/package_management/apt.py b/cloudinit/distros/package_management/apt.py
index 11742797646..3149692f5c4 100644
--- a/cloudinit/distros/package_management/apt.py
+++ b/cloudinit/distros/package_management/apt.py
@@ -174,7 +174,6 @@ def run_package_command(self, command, args=None, pkgs=None):
         full_command.extend(pkglist)
 
         self._wait_for_apt_command(
-            short_cmd=command,
             subp_kwargs={
                 "args": full_command,
                 "update_env": self.environment,
@@ -199,11 +198,10 @@ def _apt_lock_available(self):
         return True
 
     def _wait_for_apt_command(
-        self, short_cmd, subp_kwargs, timeout=APT_LOCK_WAIT_TIMEOUT
+        self, subp_kwargs, timeout=APT_LOCK_WAIT_TIMEOUT
     ):
         """Wait for apt install to complete.
 
-        short_cmd: Name of command like "upgrade" or "install"
         subp_kwargs: kwargs to pass to subp
         """
         start_time = time.monotonic()
diff --git a/cloudinit/net/eni.py b/cloudinit/net/eni.py
index 146c0167435..2eda92e7ac6 100644
--- a/cloudinit/net/eni.py
+++ b/cloudinit/net/eni.py
@@ -576,26 +576,6 @@ def render_network_state(
             )
 
 
-def network_state_to_eni(network_state, header=None, render_hwaddress=False):
-    # render the provided network state, return a string of equivalent eni
-    eni_path = "etc/network/interfaces"
-    renderer = Renderer(
-        config={
-            "eni_path": eni_path,
-            "eni_header": header,
-            "netrules_path": None,
-        }
-    )
-    if not header:
-        header = ""
-    if not header.endswith("\n"):
-        header += "\n"
-    contents = renderer._render_interfaces(
-        network_state, render_hwaddress=render_hwaddress
-    )
-    return header + contents
-
-
 def available(target=None):
     expected = ["ifquery", "ifup", "ifdown"]
     search = ["/sbin", "/usr/sbin"]
diff --git a/cloudinit/sources/DataSourceScaleway.py b/cloudinit/sources/DataSourceScaleway.py
index 4952e314edd..589ef615141 100644
--- a/cloudinit/sources/DataSourceScaleway.py
+++ b/cloudinit/sources/DataSourceScaleway.py
@@ -255,30 +255,6 @@ def ds_detect():
         if "scaleway" in cmdline:
             return True
 
-    def _set_urls_on_ip_version(self, proto, urls):
-
-        if proto not in ["ipv4", "ipv6"]:
-            LOG.debug("Invalid IP version : %s", proto)
-            return []
-
-        filtered_urls = []
-        for url in urls:
-            # Numeric IPs
-            address = urlparse(url).netloc
-            if address[0] == "[":
-                address = address[1:-1]
-            addr_proto = socket.getaddrinfo(
-                address, None, proto=socket.IPPROTO_TCP
-            )[0][0]
-            if addr_proto == socket.AF_INET and proto == "ipv4":
-                filtered_urls += [url]
-                continue
-            elif addr_proto == socket.AF_INET6 and proto == "ipv6":
-                filtered_urls += [url]
-                continue
-
-        return filtered_urls
-
     def _get_data(self):
 
         # The DataSource uses EventType.BOOT so we are called more than once.
diff --git a/cloudinit/util.py b/cloudinit/util.py
index e2f04a40209..261e138eabc 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -1811,18 +1811,6 @@ def hash_blob(blob, routine: str, mlen=None) -> str:
         return digest
 
 
-def hash_buffer(f: io.BufferedIOBase) -> bytes:
-    """Hash the content of a binary buffer using SHA1.
-
-    @param f: buffered binary stream to hash.
-    @return: digested data as bytes.
-    """
-    hasher = hashlib.sha1()
-    for chunk in iter(lambda: f.read(io.DEFAULT_BUFFER_SIZE), b""):
-        hasher.update(chunk)
-    return hasher.digest()
-
-
 def is_user(name):
     try:
         if pwd.getpwnam(name):
diff --git a/tests/unittests/config/test_cc_landscape.py b/tests/unittests/config/test_cc_landscape.py
index 7ddbe77f37a..bc79da7c081 100644
--- a/tests/unittests/config/test_cc_landscape.py
+++ b/tests/unittests/config/test_cc_landscape.py
@@ -43,14 +43,12 @@ def test_handler_restarts_landscape_client(self, m_subp, tmpdir):
         mycloud = get_cloud("ubuntu")
         mycloud.distro = mock.MagicMock()
         cfg = {"landscape": {"client": {}}}
-        default_fn = tmpdir.join("default")
         wrap_and_call(
             "cloudinit.config.cc_landscape",
             {
                 "LSC_CLIENT_CFG_FILE": {
                     "new": tmpdir.join("client.conf").strpath
                 },
-                "LS_DEFAULT_FILE": {"new": default_fn.strpath},
             },
             cc_landscape.handle,
             "notimportant",
@@ -87,7 +85,6 @@ def test_handler_installs_client_from_ppa_and_supports_overrides(
         """Call landscape-config with any filesystem overrides."""
         mycloud = get_cloud("ubuntu")
         mycloud.distro = mock.MagicMock()
-        default_fn = tmpdir.join("default")
         client_fn = tmpdir.join("client.conf")
         client_fn.write("[client]\ndata_path = /var/lib/data\n")
         cfg = {
@@ -119,7 +116,6 @@ def test_handler_installs_client_from_ppa_and_supports_overrides(
             "cloudinit.config.cc_landscape",
             {
                 "LSC_CLIENT_CFG_FILE": {"new": client_fn.strpath},
-                "LS_DEFAULT_FILE": {"new": default_fn.strpath},
             },
             cc_landscape.handle,
             "notimportant",
@@ -139,7 +135,6 @@ def test_handler_writes_merged_client_config_file_with_defaults(
         # Write existing sparse client.conf file
         client_fn = tmpdir.join("client.conf")
         client_fn.write("[client]\ncomputer_title = My PC\n")
-        default_fn = tmpdir.join("default")
         mycloud = get_cloud("ubuntu")
         mycloud.distro = mock.MagicMock()
         cfg = {"landscape": {"client": {}}}
@@ -168,7 +163,6 @@ def test_handler_writes_merged_client_config_file_with_defaults(
             "cloudinit.config.cc_landscape",
             {
                 "LSC_CLIENT_CFG_FILE": {"new": client_fn.strpath},
-                "LS_DEFAULT_FILE": {"new": default_fn.strpath},
             },
             cc_landscape.handle,
             "notimportant",
@@ -185,7 +179,6 @@ def test_handler_writes_merged_provided_cloudconfig_with_defaults(
         # Write empty sparse client.conf file
         client_fn = tmpdir.join("client.conf")
         client_fn.write("")
-        default_fn = tmpdir.join("default")
         mycloud = get_cloud("ubuntu")
         mycloud.distro = mock.MagicMock()
         cfg = {"landscape": {"client": {"computer_title": 'My" PC'}}}
@@ -214,7 +207,6 @@ def test_handler_writes_merged_provided_cloudconfig_with_defaults(
             "cloudinit.config.cc_landscape",
             {
                 "LSC_CLIENT_CFG_FILE": {"new": client_fn.strpath},
-                "LS_DEFAULT_FILE": {"new": default_fn.strpath},
             },
             cc_landscape.handle,
             "notimportant",
diff --git a/tests/unittests/config/test_schema.py b/tests/unittests/config/test_schema.py
index 0d335bad996..428a2f86a32 100644
--- a/tests/unittests/config/test_schema.py
+++ b/tests/unittests/config/test_schema.py
@@ -22,7 +22,6 @@
 
 from cloudinit import features, performance
 from cloudinit.config.schema import (
-    VERSIONED_USERDATA_SCHEMA_FILE,
     SchemaProblem,
     SchemaType,
     SchemaValidationError,
@@ -57,6 +56,7 @@
 
 M_PATH = "cloudinit.config.schema."
 DEPRECATED_LOG_LEVEL = 35
+VERSIONED_USERDATA_SCHEMA_FILE = "versions.schema.cloud-config.json"
 
 
 def get_schemas() -> dict:
@@ -973,9 +973,8 @@ class TestAnnotatedCloudconfigFile:
     def test_annotated_cloudconfig_file_no_schema_errors(self):
         """With no schema_errors, print the original content."""
         content = b"ntp:\n  pools: [ntp1.pools.com]\n"
-        parse_cfg, schemamarks = load_with_marks(content)
+        _, schemamarks = load_with_marks(content)
         assert content == annotated_cloudconfig_file(
-            parse_cfg,
             content,
             schemamarks=schemamarks,
             schema_errors=[],
@@ -1005,14 +1004,13 @@ def test_annotated_cloudconfig_file_schema_annotates_and_adds_footer(self):
 
             """
         )
-        parsed_config, schemamarks = load_with_marks(content[13:])
+        _, schemamarks = load_with_marks(content[13:])
         schema_errors = [
             SchemaProblem("ntp", "Some type error"),
             SchemaProblem("ntp.pools.0", "-99 is not a string"),
             SchemaProblem("ntp.pools.1", "75 is not a string"),
         ]
         assert expected == annotated_cloudconfig_file(
-            parsed_config,
             content,
             schemamarks=schemamarks,
             schema_errors=schema_errors,
@@ -1038,13 +1036,12 @@ def test_annotated_cloudconfig_file_annotates_separate_line_items(self):
                 - 75		# E2
             """
         )
-        parsed_config, schemamarks = load_with_marks(content[13:])
+        _, schemamarks = load_with_marks(content[13:])
         schema_errors = [
             SchemaProblem("ntp.pools.0", "-99 is not a string"),
             SchemaProblem("ntp.pools.1", "75 is not a string"),
         ]
         assert expected in annotated_cloudconfig_file(
-            parsed_config,
             content,
             schemamarks=schemamarks,
             schema_errors=schema_errors,
diff --git a/tests/unittests/distros/package_management/test_apt.py b/tests/unittests/distros/package_management/test_apt.py
index 5589b36a9f8..00523873f3b 100644
--- a/tests/unittests/distros/package_management/test_apt.py
+++ b/tests/unittests/distros/package_management/test_apt.py
@@ -40,7 +40,7 @@ def test_simple_command(self, m_apt_avail, m_subp, m_which):
     @mock.patch("cloudinit.distros.package_management.apt.time.sleep")
     def test_wait_for_lock(self, m_sleep, m_apt_avail, m_subp, m_which):
         apt = Apt(runner=mock.Mock(), apt_get_wrapper_command=("dontcare",))
-        apt._wait_for_apt_command("stub", {"args": "stub2"})
+        apt._wait_for_apt_command({"args": "stub2"})
         assert m_sleep.call_args_list == [mock.call(1), mock.call(1)]
         assert m_subp.call_args_list == [mock.call(args="stub2")]
 
@@ -58,7 +58,7 @@ def test_lock_wait_timeout(
     ):
         apt = Apt(runner=mock.Mock(), apt_get_wrapper_command=("dontcare",))
         with pytest.raises(TimeoutError):
-            apt._wait_for_apt_command("stub", "stub2", timeout=5)
+            apt._wait_for_apt_command("stub2", timeout=5)
         assert m_subp.call_args_list == []
 
     @mock.patch(
@@ -72,7 +72,7 @@ def test_lock_exception_wait(self, m_sleep, m_apt_avail, m_subp, m_which):
             exit_code=100, stderr="Could not get apt lock"
         )
         m_subp.side_effect = [exception, exception, "return_thing"]
-        ret = apt._wait_for_apt_command("stub", {"args": "stub2"})
+        ret = apt._wait_for_apt_command({"args": "stub2"})
         assert ret == "return_thing"
 
     @mock.patch(
@@ -92,7 +92,7 @@ def test_lock_exception_timeout(
             exit_code=100, stderr="Could not get apt lock"
         )
         with pytest.raises(TimeoutError):
-            apt._wait_for_apt_command("stub", {"args": "stub2"}, timeout=5)
+            apt._wait_for_apt_command({"args": "stub2"}, timeout=5)
 
     def test_search_stem(self, m_subp, m_which, mocker):
         """Test that containing `-`, `^`, `/`, or `=` is handled correctly."""
diff --git a/tests/unittests/test_net.py b/tests/unittests/test_net.py
index 3e0d789c73e..531302f70e1 100644
--- a/tests/unittests/test_net.py
+++ b/tests/unittests/test_net.py
@@ -3892,47 +3892,6 @@ def test_netplan_postcmds(
             mock_subp.assert_has_calls(expected)
 
 
-class TestEniNetworkStateToEni:
-    mycfg = {
-        "config": [
-            {
-                "type": "physical",
-                "name": "eth0",
-                "mac_address": "c0:d6:9f:2c:e8:80",
-                "subnets": [{"type": "dhcp"}],
-            }
-        ],
-        "version": 1,
-    }
-    my_mac = "c0:d6:9f:2c:e8:80"
-
-    def test_no_header(self):
-        rendered = eni.network_state_to_eni(
-            network_state=network_state.parse_net_config_data(self.mycfg),
-            render_hwaddress=True,
-        )
-        assert self.my_mac in rendered
-        assert "hwaddress" in rendered
-
-    def test_with_header(self):
-        header = "# hello world\n"
-        rendered = eni.network_state_to_eni(
-            network_state=network_state.parse_net_config_data(self.mycfg),
-            header=header,
-            render_hwaddress=True,
-        )
-        assert header in rendered
-        assert self.my_mac in rendered
-
-    def test_no_hwaddress(self):
-        rendered = eni.network_state_to_eni(
-            network_state=network_state.parse_net_config_data(self.mycfg),
-            render_hwaddress=False,
-        )
-        assert self.my_mac not in rendered
-        assert "hwaddress" not in rendered
-
-
 class TestCmdlineConfigParsing:
     simple_cfg = {
         "config": [
diff --git a/tests/unittests/test_util.py b/tests/unittests/test_util.py
index 221e21de5c2..8a107191b0e 100644
--- a/tests/unittests/test_util.py
+++ b/tests/unittests/test_util.py
@@ -3248,27 +3248,6 @@ def test_ips_need_not_be_resolved(self, m_getaddr, m_dns):
         assert not m_getaddr.called
 
 
-class TestHashBuffer:
-    def test_in_memory(self):
-        buf = io.BytesIO(b"hola")
-        assert (
-            util.hash_buffer(buf)
-            == b"\x99\x80\x0b\x85\xd38>:/\xb4^\xb7\xd0\x06jHy\xa9\xda\xd0"
-        )
-
-    def test_file(self, tmp_path):
-        content = b"hola"
-        file = tmp_path / "file.txt"
-        with file.open("wb") as f:
-            f.write(content)
-
-        with file.open("rb") as f:
-            assert (
-                util.hash_buffer(f)
-                == b"\x99\x80\x0b\x85\xd38>:/\xb4^\xb7\xd0\x06jHy\xa9\xda\xd0"
-            )
-
-
 class TestMaybeB64Decode:
     """Test the maybe_b64decode helper function."""