Remove unused import.
Remove unused import.

fortime/pykafka,wikimedia/operations-debs-python-pykafka,vortec/pykafka,jofusa/pykafka,wikimedia/operations-debs-python-pykafka,sammerry/pykafka,benauthor/pykafka,appsoma/pykafka,fortime/pykafka,jofusa/pykafka,wikimedia/operations-debs-python-pykafka,aeroevan/pykafka,aeroevan/pykafka,benauthor/pykafka,sontek/pykafka,yungchin/pykafka,yungchin/pykafka,appsoma/pykafka,thedrow/samsa,thedrow/samsa,sammerry/pykafka,vortec/pykafka,thedrow/samsa,sontek/pykafka,benauthor/pykafka