Deleting client_id from offset commit and fetch response as per Kafka trunk code

Author: Ashish Walia

kafka/protocol.py

@@ -439,7 +439,6 @@ def decode_offset_commit_response(cls, data):
         data: bytes to decode
         """
         ((correlation_id,), cur) = relative_unpack('>i', data, 0)
-        (client_id, cur) = read_short_string(data, cur)
         ((num_topics,), cur) = relative_unpack('>i', data, cur)
 
         for i in xrange(num_topics):
@@ -490,7 +489,6 @@ def decode_offset_fetch_response(cls, data):
         """
 
         ((correlation_id,), cur) = relative_unpack('>i', data, 0)
-        (client_id, cur) = read_short_string(data, cur)
         ((num_topics,), cur) = relative_unpack('>i', data, cur)
 
         for i in range(num_topics):