Add first batch of Ruff PYI rules (#115100)

Co-authored-by: Jan Bouwhuis <jbouwh@users.noreply.github.com>

homeassistant/helpers/typing.py

@@ -3,7 +3,7 @@
 from collections.abc import Mapping
 from enum import Enum
 from functools import partial
-from typing import Any, TypeVar
+from typing import Any
 
 import homeassistant.core
 
@@ -14,8 +14,6 @@ from .deprecation import (
     dir_with_deprecated_constants,
 )
 
-_DataT = TypeVar("_DataT")
-
 GPSType = tuple[float, float]
 ConfigType = dict[str, Any]
 DiscoveryInfoType = dict[str, Any]