Python3: Fix test_match_text_stringify_result
Python3: Fix test_match_text_stringify_result

On Python 3, str(TextMatchResult) looks like:

    ..., text='Onion Bhaji')

Not:

    ..., text=u'Onion Bhaji')

stb-tester/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester