Remove unused import
Remove unused import

Forgot to remove this in https://github.com/dpkp/kafka-python/pull/1925
/ ca2d76304bfe3900f995e6f0e4377b2ef654997e

mumrah/kafka-python,ohmu/kafka-python,scrapinghub/kafka-python,DataDog/kafka-python,dpkp/kafka-python,mumrah/kafka-python,scrapinghub/kafka-python,ohmu/kafka-python,dpkp/kafka-python