fix collections.abc.Callable and typing.Callable

Author: KotlinIsland

stdlib/@tests/test_cases/check_collections_abc.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from collections.abc import Callable
+from typing_extensions import assert_type
+
+assert_type(Callable, type[Callable])
+
+_: type[Callable] = Callable
+
+
+class C(Callable): ...
+
+
+def f(c: Callable) -> None:
+    _ = c.__call__

stdlib/_collections_abc.pyi

@@ -73,7 +73,6 @@ _P = ParamSpec("_P")
 
 @runtime_checkable
 class Callable(Protocol[_P, _R_co], metaclass=ABCMeta):
-
     __slots__ = ()
 
     @abstractmethod