[py]: fixes flake8 violations in `virtual_authenticator.py`
@@ -20,13 +20,6 @@ import functools
from base64 import urlsafe_b64encode, urlsafe_b64decode
from enum import Enum
import typing
-import sys
-
-if typing.TYPE_CHECKING:
- if sys.version_info >= (3, 8):
- from typing import Literal
- else:
- from typing_extensions import Literal
class Protocol(Enum):
