Remove unneeded # noqa comments, fix broken # noqa comments (#7561)

stubs/httplib2/httplib2/__init__.pyi

@@ -1,12 +1,10 @@
 import http.client
+from _typeshed import Self
 from collections.abc import Generator
-from typing import Any, TypeVar
+from typing import Any
 
 from .error import *
 
-# Should use _typeshed.Self when google/pytype#952 is fixed.
-Self = TypeVar("Self")  # noqa Y001
-
 __author__: str
 __copyright__: str
 __contributors__: list[str]