Remove Unischema __getattr__ implementation

Author: v01dxyz

Diff for: petastorm/unischema.py

@@ -352,9 +352,6 @@ def from_arrow_schema(cls, parquet_dataset, omit_unsupported_fields=False):
             unischema_fields.append(UnischemaField(column_name, np_type, field_shape, None, arrow_field.nullable))
         return Unischema('inferred_schema', unischema_fields)
 
-    def __getattr__(self, item) -> Any:
-        return super().__getattribute__(item)
-
 
 def dict_to_spark_row(unischema, row_dict):
     """Converts a single row into a spark Row object.