fix isort errors

Author: smanolloff

src/imitation/algorithms/adversarial/common.py

@@ -2,7 +2,7 @@
 import abc
 import dataclasses
 import logging
-from typing import Iterable, Iterator, Mapping, Optional, Type, List, overload
+from typing import Iterable, Iterator, List, Mapping, Optional, Type, overload
 
 import numpy as np
 import torch as th