diff --git a/.github/workflows/protocol.yml b/.github/workflows/protocol.yml
index cfe560403..755557039 100644
--- a/.github/workflows/protocol.yml
+++ b/.github/workflows/protocol.yml
@@ -6,17 +6,6 @@ on:
   pull_request:
     branches: [ master ]
 
-env:
-  # GITHUB_PULL_REQUEST_URL are used for commenting test reports in Launchable Github App.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/link.py#L42
-  GITHUB_PULL_REQUEST_URL: ${{ github.event.pull_request.html_url }}
-  # The following envs are necessary in Launchable tokenless authentication.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L20
-  LAUNCHABLE_ORGANIZATION: "ruby"
-  LAUNCHABLE_WORKSPACE: "debug"
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L71
-  GITHUB_PR_HEAD_SHA: ${{ github.event.pull_request.head.sha || github.sha }}
-
 jobs:
   test:
 
@@ -29,27 +18,6 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-      with:
-        # Set fetch-depth: 0 so that Launchable can receive commits information.
-        fetch-depth: 0
-    # Launchable requires Python and Java
-    # https://www.launchableinc.com/docs/resources/cli-reference/
-    - uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v3
-      with:
-        distribution: 'adopt'
-        java-version: '8'
-    # Setup Launchable
-    - name: Launchable - install command
-      run: pip install launchable
-    - name: Launchable - verify
-      run: launchable verify
-    - name: Launchable - record build
-      run: launchable record build --name ${GITHUB_PR_HEAD_SHA}
-
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
@@ -59,7 +27,4 @@ jobs:
       run: |
         bundle exec rake clobber
         bundle exec rake compile
-        TESTOPTS="--runner=junitxml --junitxml-output-file=protocol.xml" bundle exec rake test_protocol
-    - name: Launchable - record tests
-      run: launchable record tests --flavor test=protocol --flavor os=ubuntu-latest --flavor ruby=${{ matrix.ruby-version }} file protocol.xml
-      if: always()
+        bundle exec rake test_protocol
diff --git a/.github/workflows/ruby-macos.yaml b/.github/workflows/ruby-macos.yaml
index 5d505fae7..4b04e8647 100644
--- a/.github/workflows/ruby-macos.yaml
+++ b/.github/workflows/ruby-macos.yaml
@@ -6,17 +6,6 @@ on:
   pull_request:
     branches: [ master ]
 
-env:
-  # GITHUB_PULL_REQUEST_URL are used for commenting test reports in Launchable Github App.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/link.py#L42
-  GITHUB_PULL_REQUEST_URL: ${{ github.event.pull_request.html_url }}
-  # The following envs are necessary in Launchable tokenless authentication.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L20
-  LAUNCHABLE_ORGANIZATION: "ruby"
-  LAUNCHABLE_WORKSPACE: "debug"
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L71
-  GITHUB_PR_HEAD_SHA: ${{ github.event.pull_request.head.sha || github.sha }}
-
 jobs:
   test:
 
@@ -29,27 +18,6 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-      with:
-        # Set fetch-depth: 0 so that Launchable can receive commits information.
-        fetch-depth: 0
-    # Launchable requires Python and Java
-    # https://www.launchableinc.com/docs/resources/cli-reference/
-    - uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v3
-      with:
-        distribution: 'adopt'
-        java-version: '8'
-    # Setup Launchable
-    - name: Launchable - install command
-      run: pip install launchable
-    - name: Launchable - verify
-      run: launchable verify
-    - name: Launchable - record build
-      run: launchable record build --name ${GITHUB_PR_HEAD_SHA}
-
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
@@ -59,7 +27,4 @@ jobs:
       run: |
         bundle exec rake clobber
         bundle exec rake compile
-        TESTOPTS="--runner=junitxml --junitxml-output-file=ruby-macos.xml" bundle exec rake test_console
-    - name: launchable record tests
-      run: launchable record tests --flavor test=console --flavor os=macos-latest --flavor ruby=${{ matrix.ruby-version }} file ruby-macos.xml
-      if: always()
+        bundle exec rake test_console
diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index c3f6e7e2d..dd76ced54 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -6,17 +6,6 @@ on:
   pull_request:
     branches: [ master ]
 
-env:
-  # GITHUB_PULL_REQUEST_URL are used for commenting test reports in Launchable Github App.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/link.py#L42
-  GITHUB_PULL_REQUEST_URL: ${{ github.event.pull_request.html_url }}
-  # The following envs are necessary in Launchable tokenless authentication.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L20
-  LAUNCHABLE_ORGANIZATION: "ruby"
-  LAUNCHABLE_WORKSPACE: "debug"
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L71
-  GITHUB_PR_HEAD_SHA: ${{ github.event.pull_request.head.sha || github.sha }}
-
 jobs:
   test:
 
@@ -29,27 +18,6 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-      with:
-        # Set fetch-depth: 0 so that Launchable can receive commits information.
-        fetch-depth: 0
-    # Launchable requires Python and Java
-    # https://www.launchableinc.com/docs/resources/cli-reference/
-    - uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v3
-      with:
-        distribution: 'adopt'
-        java-version: '8'
-    # Setup Launchable
-    - name: Launchable - install command
-      run: pip install launchable
-    - name: Launchable - verify
-      run: launchable verify
-    - name: Launchable - record build
-      run: launchable record build --name ${GITHUB_PR_HEAD_SHA}
-
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
@@ -59,7 +27,4 @@ jobs:
       run: |
         bundle exec rake clobber
         bundle exec rake compile
-        TESTOPTS="--runner=junitxml --junitxml-output-file=ruby.xml" bundle exec rake test_console
-    - name: launchable record tests
-      run: launchable record tests --flavor test=console --flavor os=ubuntu-latest --flavor ruby=${{ matrix.ruby-version }} file ruby.xml
-      if: always()
+        bundle exec rake test_console
diff --git a/.github/workflows/test_test.yml b/.github/workflows/test_test.yml
index c3955fc20..3123697fe 100644
--- a/.github/workflows/test_test.yml
+++ b/.github/workflows/test_test.yml
@@ -6,17 +6,6 @@ on:
   pull_request:
     branches: [ master ]
 
-env:
-  # GITHUB_PULL_REQUEST_URL are used for commenting test reports in Launchable Github App.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/link.py#L42
-  GITHUB_PULL_REQUEST_URL: ${{ github.event.pull_request.html_url }}
-  # The following envs are necessary in Launchable tokenless authentication.
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L20
-  LAUNCHABLE_ORGANIZATION: "ruby"
-  LAUNCHABLE_WORKSPACE: "debug"
-  # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L71
-  GITHUB_PR_HEAD_SHA: ${{ github.event.pull_request.head.sha || github.sha }}
-
 jobs:
   test:
 
@@ -29,27 +18,6 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-      with:
-        # Set fetch-depth: 0 so that Launchable can receive commits information.
-        fetch-depth: 0
-    # Launchable requires Python and Java
-    # https://www.launchableinc.com/docs/resources/cli-reference/
-    - uses: actions/setup-python@v4
-      with:
-        python-version: "3.10"
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v3
-      with:
-        distribution: 'adopt'
-        java-version: '8'
-    # Setup Launchable
-    - name: Launchable - install command
-      run: pip install launchable
-    - name: Launchable - verify
-      run: launchable verify
-    - name: Launchable - record build
-      run: launchable record build --name ${GITHUB_PR_HEAD_SHA}
-
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
@@ -59,7 +27,4 @@ jobs:
       run: |
         bundle exec rake clobber
         bundle exec rake compile
-        TESTOPTS="--runner=junitxml --junitxml-output-file=test_test.xml" bundle exec rake test_test
-    - name: launchable record tests
-      run: launchable record tests --flavor test=test-framework --flavor os=ubuntu-latest --flavor ruby=${{ matrix.ruby-version }} file test_test.xml
-      if: always()
+        bundle exec rake test_test
diff --git a/Gemfile b/Gemfile
index 50630d1e8..c59ccbe1a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,4 +7,3 @@ gem "rake-compiler"
 gem "test-unit", "~> 3.0"
 gem "test-unit-rr"
 gem "json-schema"
-gem "test-unit-runner-junitxml"
diff --git a/test/support/test_case.rb b/test/support/test_case.rb
index d20f91622..fae5b9f58 100644
--- a/test/support/test_case.rb
+++ b/test/support/test_case.rb
@@ -11,13 +11,6 @@
 
 require_relative 'assertions'
 
-# Load this library only in the debug CI to prevent LoadError
-# when these tests are executed in ruby/ruby.
-if ENV['LAUNCHABLE_ORGANIZATION'] && ENV['LAUNCHABLE_WORKSPACE']
-  # "test/unit/runner/junitxml" is used for reporting test result in JUnit XML format.
-  require "test/unit/runner/junitxml"
-end
-
 module DEBUGGER__
   class TestCase < Test::Unit::TestCase
     TestInfo = Struct.new(:queue, :mode, :prompt_pattern, :remote_info,