[deprecation] Remove all duplicated typing guard check functions

doc/whatsnew/fragments/8475.internal

@@ -0,0 +1,5 @@
+Following a deprecation period, ``is_typing_guard``, ``is_node_in_typing_guarded_import_block`` and
+``is_node_in_guarded_import_block``: from ``pylint.utils`` were removed: use a combination of
+``is_sys_guard`` and ``in_type_checking_block`` instead.
+
+Refs #8475

pylint/checkers/utils.py

@@ -12,7 +12,6 @@
 import numbers
 import re
 import string
-import warnings
 from collections import deque
 from collections.abc import Iterable, Iterator
 from functools import lru_cache, partial
@@ -1792,48 +1791,6 @@ def is_sys_guard(node: nodes.If) -> bool:
     return False
 
 
-def is_typing_guard(node: nodes.If) -> bool:
-    """Return True if IF stmt is a typing guard.
-
-    >>> from typing import TYPE_CHECKING
-    >>> if TYPE_CHECKING:
-    >>>     from xyz import a
-    """
-    warnings.warn(
-        "This method will be removed in pylint 3.0; use in_type_checking_block() instead.",
-        DeprecationWarning,
-        stacklevel=2,
-    )  # pragma: no cover
-    return isinstance(
-        node.test, (nodes.Name, nodes.Attribute)
-    ) and node.test.as_string().endswith("TYPE_CHECKING")
-
-
-def is_node_in_typing_guarded_import_block(node: nodes.NodeNG) -> bool:
-    """Return True if node is part for guarded `typing.TYPE_CHECKING` if block."""
-    warnings.warn(
-        "This method will be removed in pylint 3.0; use in_type_checking_block() instead.",
-        DeprecationWarning,
-        stacklevel=2,
-    )  # pragma: no cover
-    return isinstance(node.parent, nodes.If) and is_typing_guard(node.parent)
-
-
-def is_node_in_guarded_import_block(node: nodes.NodeNG) -> bool:
-    """Return True if node is part for guarded if block.
-
-    I.e. `sys.version_info` or `typing.TYPE_CHECKING`
-    """
-    warnings.warn(
-        "This method will be removed in pylint 3.0; use in_type_checking_block() instead.",
-        DeprecationWarning,
-        stacklevel=2,
-    )  # pragma: no cover
-    return isinstance(node.parent, nodes.If) and (
-        is_sys_guard(node.parent) or is_typing_guard(node.parent)
-    )
-
-
 def is_reassigned_after_current(node: nodes.NodeNG, varname: str) -> bool:
     """Check if the given variable name is reassigned in the same scope after the
     current node.

tests/checkers/unittest_utils.py

@@ -413,38 +413,37 @@ def test_if_sys_guard() -> None:
     assert utils.is_sys_guard(code[2]) is False
 
 
-@pytest.mark.filterwarnings("ignore::DeprecationWarning")
 def test_if_typing_guard() -> None:
     code = astroid.extract_node(
         """
     import typing
     import typing as t
     from typing import TYPE_CHECKING
 
-    if typing.TYPE_CHECKING:  #@
-        pass
+    if typing.TYPE_CHECKING:
+        pass  #@
 
-    if t.TYPE_CHECKING:  #@
-        pass
+    if t.TYPE_CHECKING:
+        pass #@
 
-    if TYPE_CHECKING:  #@
-        pass
+    if TYPE_CHECKING:
+        pass #@
 
-    if typing.SOME_OTHER_CONST:  #@
-        pass
+    if typing.SOME_OTHER_CONST:
+        pass  #@
     """
     )
     assert isinstance(code, list) and len(code) == 4
 
-    assert isinstance(code[0], nodes.If)
-    assert utils.is_typing_guard(code[0]) is True
-    assert isinstance(code[1], nodes.If)
-    assert utils.is_typing_guard(code[1]) is True
-    assert isinstance(code[2], nodes.If)
-    assert utils.is_typing_guard(code[2]) is True
+    assert isinstance(code[0], nodes.Pass)
+    assert utils.in_type_checking_block(code[0]) is True
+    assert isinstance(code[1], nodes.Pass)
+    assert utils.in_type_checking_block(code[1]) is True
+    assert isinstance(code[2], nodes.Pass)
+    assert utils.in_type_checking_block(code[2]) is True
 
-    assert isinstance(code[3], nodes.If)
-    assert utils.is_typing_guard(code[3]) is False
+    assert isinstance(code[3], nodes.Pass)
+    assert utils.in_type_checking_block(code[3]) is False
 
 
 def test_in_type_checking_block() -> None: