Followup cleanup to #1304

jeffwidman · web-flow · commit 04fb37f690df · 2017-12-08T16:17:10.000-08:00
https://github.com/dpkp/kafka-python/pull/1304/files#r155842880
diff --git a/kafka/util.py b/kafka/util.py
@@ -25,8 +25,7 @@ def crc32(data):
             crc -= TO_SIGNED
         return crc
 else:
-    def crc32(data):
-        return binascii.crc32(data)
+    from binascii import crc32
 
 
 def write_int_string(s):
