Python: Don't use six in urllib.parse string related tests

Since this test inheriently has `--max-import-depth=1`, by using six, we would
never look at the actual source-code of urllib.parse/urlparse and therefore the
test would never show if we understood the library code good enough that we
could propagate taint out-of-the-box.

All tests moved by one line... that is why the diff is so big

Author: RasmusWL