removed pass statement

Author: GeneCodeSavvy

sbol3/property_base.py

@@ -55,7 +55,6 @@ def item_added(self, item: Any) -> None:
         any additional processing on items after they are added. This method
         will be called on each individual item that was added to the list.
         """
-        # pass  # pylint: disable=unnecessary-pass
 
     @property
     def attribute_name(self) -> Union[str, None]: