diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 7fddb36185789..e4dad8800d78f 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -235,6 +235,7 @@ Removal of prior version deprecations/changes
 - Removed "freq" keyword from :class:`PeriodArray` constructor, use "dtype" instead (:issue:`52462`)
 - Removed 'fastpath' keyword in :class:`Categorical` constructor (:issue:`20110`)
 - Removed 'kind' keyword in :meth:`Series.resample` and :meth:`DataFrame.resample` (:issue:`58125`)
+- Removed ``Block``, ``DatetimeTZBlock``, ``ExtensionBlock``, ``create_block_manager_from_blocks`` from ``pandas.core.internals`` and ``pandas.core.internals.api`` (:issue:`55139`)
 - Removed alias :class:`arrays.PandasArray` for :class:`arrays.NumpyExtensionArray` (:issue:`53694`)
 - Removed deprecated "method" and "limit" keywords from :meth:`Series.replace` and :meth:`DataFrame.replace` (:issue:`53492`)
 - Removed extension test classes ``BaseNoReduceTests``, ``BaseNumericReduceTests``, ``BaseBooleanReduceTests`` (:issue:`54663`)
diff --git a/pandas/core/internals/api.py b/pandas/core/internals/api.py
index ef25d7ed5ae9e..24bfad4791b29 100644
--- a/pandas/core/internals/api.py
+++ b/pandas/core/internals/api.py
@@ -92,10 +92,7 @@ def make_block(
 
     values, dtype = extract_pandas_array(values, dtype, ndim)
 
-    from pandas.core.internals.blocks import (
-        DatetimeTZBlock,
-        ExtensionBlock,
-    )
+    from pandas.core.internals.blocks import ExtensionBlock
 
     if klass is ExtensionBlock and isinstance(values.dtype, PeriodDtype):
         # GH-44681 changed PeriodArray to be stored in the 2D
@@ -107,16 +104,6 @@ def make_block(
         dtype = dtype or values.dtype
         klass = get_block_type(dtype)
 
-    elif klass is DatetimeTZBlock and not isinstance(values.dtype, DatetimeTZDtype):
-        # pyarrow calls get here
-        values = DatetimeArray._simple_new(
-            # error: Argument "dtype" to "_simple_new" of "DatetimeArray" has
-            # incompatible type "Union[ExtensionDtype, dtype[Any], None]";
-            # expected "Union[dtype[datetime64], DatetimeTZDtype]"
-            values,
-            dtype=dtype,  # type: ignore[arg-type]
-        )
-
     if not isinstance(placement, BlockPlacement):
         placement = BlockPlacement(placement)
 
@@ -146,48 +133,3 @@ def maybe_infer_ndim(values, placement: BlockPlacement, ndim: int | None) -> int
         else:
             ndim = values.ndim
     return ndim
-
-
-def __getattr__(name: str):
-    # GH#55139
-    import warnings
-
-    if name in [
-        "Block",
-        "ExtensionBlock",
-        "DatetimeTZBlock",
-        "create_block_manager_from_blocks",
-    ]:
-        # GH#33892
-        warnings.warn(
-            f"{name} is deprecated and will be removed in a future version. "
-            "Use public APIs instead.",
-            DeprecationWarning,
-            # https://github.com/pandas-dev/pandas/pull/55139#pullrequestreview-1720690758
-            # on hard-coding stacklevel
-            stacklevel=2,
-        )
-
-        if name == "create_block_manager_from_blocks":
-            from pandas.core.internals.managers import create_block_manager_from_blocks
-
-            return create_block_manager_from_blocks
-
-        elif name == "Block":
-            from pandas.core.internals.blocks import Block
-
-            return Block
-
-        elif name == "DatetimeTZBlock":
-            from pandas.core.internals.blocks import DatetimeTZBlock
-
-            return DatetimeTZBlock
-
-        elif name == "ExtensionBlock":
-            from pandas.core.internals.blocks import ExtensionBlock
-
-            return ExtensionBlock
-
-    raise AttributeError(
-        f"module 'pandas.core.internals.api' has no attribute '{name}'"
-    )
diff --git a/pandas/core/internals/blocks.py b/pandas/core/internals/blocks.py
index 6107c009b5bf1..cffb1f658a640 100644
--- a/pandas/core/internals/blocks.py
+++ b/pandas/core/internals/blocks.py
@@ -2153,14 +2153,6 @@ class DatetimeLikeBlock(NDArrayBackedExtensionBlock):
     values: DatetimeArray | TimedeltaArray
 
 
-class DatetimeTZBlock(DatetimeLikeBlock):
-    """implement a datetime64 block with a tz attribute"""
-
-    values: DatetimeArray
-
-    __slots__ = ()
-
-
 # -----------------------------------------------------------------
 # Constructor Helpers
 
@@ -2207,7 +2199,7 @@ def get_block_type(dtype: DtypeObj) -> type[Block]:
     cls : class, subclass of Block
     """
     if isinstance(dtype, DatetimeTZDtype):
-        return DatetimeTZBlock
+        return DatetimeLikeBlock
     elif isinstance(dtype, PeriodDtype):
         return NDArrayBackedExtensionBlock
     elif isinstance(dtype, ExtensionDtype):