Remove un-needed __hash__ methods from stdlib (#8465)

stdlib/ipaddress.pyi

@@ -31,7 +31,6 @@ class _IPAddressBase:
 class _BaseAddress(_IPAddressBase, SupportsInt):
     def __init__(self, address: object) -> None: ...
     def __add__(self: Self, other: int) -> Self: ...
-    def __hash__(self) -> int: ...
     def __int__(self) -> int: ...
     def __sub__(self: Self, other: int) -> Self: ...
     def __format__(self, fmt: str) -> str: ...