Remove previously deprecated StrEnum backport (#146477)

homeassistant/backports/enum.py

@@ -1,29 +0,0 @@
-"""Enum backports from standard lib.
-
-This file contained the backport of the StrEnum of Python 3.11.
-
-Since we have dropped support for Python 3.10, we can remove this backport.
-This file is kept for now to avoid breaking custom components that might
-import it.
-"""
-
-from __future__ import annotations
-
-from enum import StrEnum as _StrEnum
-from functools import partial
-
-from homeassistant.helpers.deprecation import (
-    DeprecatedAlias,
-    all_with_deprecated_constants,
-    check_if_deprecated_constant,
-    dir_with_deprecated_constants,
-)
-
-# StrEnum deprecated as of 2024.5 use enum.StrEnum instead.
-_DEPRECATED_StrEnum = DeprecatedAlias(_StrEnum, "enum.StrEnum", "2025.5")
-
-__getattr__ = partial(check_if_deprecated_constant, module_globals=globals())
-__dir__ = partial(
-    dir_with_deprecated_constants, module_globals_keys=[*globals().keys()]
-)
-__all__ = all_with_deprecated_constants(globals())

pylint/plugins/hass_imports.py

@@ -25,12 +25,6 @@ _OBSOLETE_IMPORT: dict[str, list[ObsoleteImportMatch]] = {
             constant=re.compile(r"^cached_property$"),
         ),
     ],
-    "homeassistant.backports.enum": [
-        ObsoleteImportMatch(
-            reason="We can now use the Python 3.11 provided enum.StrEnum instead",
-            constant=re.compile(r"^StrEnum$"),
-        ),
-    ],
     "homeassistant.backports.functools": [
         ObsoleteImportMatch(
             reason="replaced by propcache.api.cached_property",

tests/test_backports.py

@@ -2,17 +2,13 @@
 
 from __future__ import annotations
 
-from enum import StrEnum
 from functools import cached_property  # pylint: disable=hass-deprecated-import
 from types import ModuleType
 from typing import Any
 
 import pytest
 
-from homeassistant.backports import (
-    enum as backports_enum,
-    functools as backports_functools,
-)
+from homeassistant.backports import functools as backports_functools
 
 from .common import import_and_test_deprecated_alias
 
@@ -20,7 +16,6 @@ from .common import import_and_test_deprecated_alias
 @pytest.mark.parametrize(
     ("module", "replacement", "breaks_in_ha_version"),
     [
-        (backports_enum, StrEnum, "2025.5"),
         (backports_functools, cached_property, "2025.5"),
     ],
 )