fixup! Hash checking of cached wheels

Author: sbidoul

src/pip/_internal/exceptions.py

@@ -8,7 +8,7 @@
 import configparser
 import re
 from itertools import chain, groupby, repeat
-from typing import TYPE_CHECKING, Dict, List, Mapping, Optional, Protocol, Union
+from typing import TYPE_CHECKING, Dict, List, Mapping, Optional, Union
 
 from pip._vendor.requests.models import Request, Response
 from pip._vendor.rich.console import Console, ConsoleOptions, RenderResult