PEP8: delete unused import
PEP8: delete unused import

kimegitee/python-koans,kjc/python_koans,gregmalcolm/python_koans,erikld/Bobo,kimegitee/python-koans,kjc/python_koans,welenofsky/python_koans,bohdan7/python_koans,PaulFranklin/python_koans,rameshugar/koans,gregmalcolm/python_koans,kernbeisser/python_koans,garethsaxby/python_koans,garethsaxby/python_koans,welenofsky/python_koans,haroldtreen/python_koans,EavesofIT/python_koans,bordeltabernacle/python_koans,gregkorte/Python-Koans,gregkorte/Python-Koans,bohdan7/python_koans,haroldtreen/python_koans,erikld/Bobo,Sam-Rowe/python-koans,EavesofIT/python_koans,bordeltabernacle/python_koans,PaulFranklin/python_koans,Sam-Rowe/python-koans,kernbeisser/python_koans,rameshugar/koans