Use builtin TimeoutError in asyncio and concurrent.futures (#11109)

related to https://github.com/python/typeshed/issues/3968

Co-authored-by: Stephen Morton <git@tungol.org>

stdlib/concurrent/futures/_base.pyi

@@ -24,7 +24,11 @@ LOGGER: Logger
 
 class Error(Exception): ...
 class CancelledError(Error): ...
-class TimeoutError(Error): ...
+
+if sys.version_info >= (3, 11):
+    from builtins import TimeoutError as TimeoutError
+else:
+    class TimeoutError(Error): ...
 
 if sys.version_info >= (3, 8):
     class InvalidStateError(Error): ...