diff --git a/pandas/core/internals/blocks.py b/pandas/core/internals/blocks.py
index f0128b70d7432..1f6ca4b3008b9 100644
--- a/pandas/core/internals/blocks.py
+++ b/pandas/core/internals/blocks.py
@@ -214,17 +214,12 @@ def make_block(self, values, placement=None, ndim=None):
 
         return make_block(values, placement=placement, ndim=ndim)
 
-    def make_block_same_class(self, values, placement=None, ndim=None,
-                              dtype=None):
+    def make_block_same_class(self, values, placement=None, ndim=None):
         """ Wrap given values in a block of same type as self. """
-        if dtype is not None:
-            # issue 19431 fastparquet is passing this
-            warnings.warn("dtype argument is deprecated, will be removed "
-                          "in a future release.", FutureWarning)
         if placement is None:
             placement = self.mgr_locs
         return make_block(values, placement=placement, ndim=ndim,
-                          klass=self.__class__, dtype=dtype)
+                          klass=self.__class__)
 
     def __repr__(self):
         # don't want to print out all of the items here
@@ -2246,13 +2241,6 @@ def is_view(self):
         # check the ndarray values of the DatetimeIndex values
         return self.values._data.base is not None
 
-    def copy(self, deep=True):
-        """ copy constructor """
-        values = self.values
-        if deep:
-            values = values.copy()
-        return self.make_block_same_class(values)
-
     def get_values(self, dtype=None):
         """
         Returns an ndarray of values.
@@ -3041,8 +3029,7 @@ def get_block_type(values, dtype=None):
     return cls
 
 
-def make_block(values, placement, klass=None, ndim=None, dtype=None,
-               fastpath=None):
+def make_block(values, placement, klass=None, ndim=None, dtype=None):
     # Ensure that we don't allow PandasArray / PandasDtype in internals.
     # For now, blocks should be backed by ndarrays when possible.
     if isinstance(values, ABCPandasArray):
@@ -3053,10 +3040,6 @@ def make_block(values, placement, klass=None, ndim=None, dtype=None,
     if isinstance(dtype, PandasDtype):
         dtype = dtype.numpy_dtype
 
-    if fastpath is not None:
-        # GH#19265 pyarrow is passing this
-        warnings.warn("fastpath argument is deprecated, will be removed "
-                      "in a future release.", FutureWarning)
     if klass is None:
         dtype = dtype or values.dtype
         klass = get_block_type(values, dtype)
diff --git a/pandas/tests/internals/test_internals.py b/pandas/tests/internals/test_internals.py
index 697c0b5280589..b4631b67408a5 100644
--- a/pandas/tests/internals/test_internals.py
+++ b/pandas/tests/internals/test_internals.py
@@ -284,14 +284,6 @@ def test_delete(self):
         with pytest.raises(Exception):
             newb.delete(3)
 
-    def test_make_block_same_class(self):
-        # issue 19431
-        block = create_block('M8[ns, US/Eastern]', [3])
-        with tm.assert_produces_warning(FutureWarning,
-                                        check_stacklevel=False):
-            block.make_block_same_class(block.values,
-                                        dtype=block.values.dtype)
-
 
 class TestDatetimeBlock:
 
@@ -1251,14 +1243,6 @@ def test_holder(typestr, holder):
     assert blk._holder is holder
 
 
-def test_deprecated_fastpath():
-    # GH#19265
-    values = np.random.rand(3, 3)
-    with tm.assert_produces_warning(FutureWarning,
-                                    check_stacklevel=False):
-        make_block(values, placement=np.arange(3), fastpath=True)
-
-
 def test_validate_ndim():
     values = np.array([1.0, 2.0])
     placement = slice(2)