Python 3.14 removed the URLopener and FancyURLopener classes from urllib.request

[hroncok]

python/cpython#84850

Remove URLopener and FancyURLopener classes from urllib.request.
They had previously raised DeprecationWarning since Python 3.3.

The test failures were:

__________________ test_move_items_urllib_request[URLopener] ___________________

item_name = 'URLopener'

    @pytest.mark.parametrize("item_name",
                              [item.name for item in six._urllib_request_moved_attributes])
    def test_move_items_urllib_request(item_name):
        """Ensure that everything loads correctly."""
        assert item_name in dir(six.moves.urllib.request)
>       getattr(six.moves.urllib.request, item_name)
E       AttributeError: module 'six.moves.urllib.request' has no attribute 'URLopener'

test_six.py:170: AttributeError
________________ test_move_items_urllib_request[FancyURLopener] ________________

item_name = 'FancyURLopener'

    @pytest.mark.parametrize("item_name",
                              [item.name for item in six._urllib_request_moved_attributes])
    def test_move_items_urllib_request(item_name):
        """Ensure that everything loads correctly."""
        assert item_name in dir(six.moves.urllib.request)
>       getattr(six.moves.urllib.request, item_name)
E       AttributeError: module 'six.moves.urllib.request' has no attribute 'FancyURLopener'

test_six.py:170: AttributeError