Merge pull request #313 from bysiber/fix/delattr-annotations

Fix ObjectProxy.__delattr__ missing __annotations__ special case

Author: GrahamDumpleton

src/wrapt/wrappers.py

@@ -283,6 +283,10 @@ def __delattr__(self, name):
             object.__delattr__(self, name)
             delattr(self.__wrapped__, name)
 
+        elif name == "__annotations__":
+            object.__delattr__(self, name)
+            delattr(self.__wrapped__, name)
+
         elif hasattr(type(self), name):
             object.__delattr__(self, name)