Update localedata.py

Author: DenverCoder1

babel/localedata.py

@@ -214,7 +214,7 @@ def resolve(self, data: Mapping[_Key, _Value]) -> dict[_Key, _Value]:
             data = alias.resolve(base)
         return dict(data)
 
-class LocaleDataDict(abc.MutableMapping[_Key, _Value]):
+class LocaleDataDict(MutableMapping[_Key, _Value]):
     """Dictionary wrapper that automatically resolves aliases to the actual
     values.
     """