remove obsolete AutoCast pytype workaround

PiperOrigin-RevId: 788877579

Author: Qwlouse

etils/edc/cast_utils.py

@@ -17,7 +17,6 @@
 from __future__ import annotations
 
 import dataclasses
-import typing
 from typing import Any, TypeVar
 
 from etils.edc import field_utils
@@ -30,18 +29,7 @@
 _IS_NORMALIZED = object()
 
 
-if typing.TYPE_CHECKING:
-  # TODO(b/254514368): Remove hack
-  class _AutoCastMeta(type):
-
-    def __getitem__(cls, value):
-      return value
-
-  class AutoCast(metaclass=_AutoCastMeta):
-    pass
-
-else:
-  AutoCast = Annotated[_T, _IS_NORMALIZED]  # pytype: disable=invalid-typevar
+AutoCast = Annotated[_T, _IS_NORMALIZED]
 
 
 def make_auto_cast_descriptor(