Remove __module__ assignment for TypeVar and friends (#175)

Author: JelleZijlstra

src/typing_extensions.py

@@ -1372,10 +1372,6 @@ class _DefaultMixin:
 
 
 class _TypeVarLikeMeta(type):
-    def __init__(cls, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        cls.__module__ = 'typing'
-
     def __instancecheck__(cls, __instance: Any) -> bool:
         return isinstance(__instance, cls._backported_typevarlike)