Remove useless branch

Author: mikeshardmind

src/async_utils/_typings.py

@@ -26,8 +26,6 @@ def final(f):  # noqa: ANN001
 
 
 def __getattr__(name: str):
-    if name == "final":  # this one actually executes at runtime
-        return final
 
     if name in {"Any", "Final", "Literal", "Self"}:
         import typing