remove obsolete downstream ignore

Author: maxfischer2781

asyncstdlib/asynctools.py

@@ -49,7 +49,7 @@ def __init__(self, iterator: Union[AsyncIterator[T], AsyncGenerator[T, S]]):
         # An async *iterator* (e.g. `async def: yield`) must return
         # itself from __aiter__. If we do not shadow this then
         # running aiter(self).aclose closes the underlying iterator.
-        self.__anext__ = self._wrapper.__anext__  # type: ignore
+        self.__anext__ = self._wrapper.__anext__
         if hasattr(iterator, "asend"):
             self.asend = (
                 iterator.asend  # pyright: ignore[reportUnknownMemberType,reportAttributeAccessIssue]