Remove duplicated utils._types logic

[mauicv]

The following logic here:

# Literal for typing
if sys.version_info >= (3, 8):
    from typing import Literal  # noqa
else:
    from typing_extensions import Literal  # noqa

in the utils._types file is unnecessary as typing_extensions already does this under the hood. Hence we should default to importing Literal from typing_extensions directly instead of from utils_types