few small cleanups

kafka/cluster.py

@@ -10,7 +10,7 @@ logger = logging.getLogger(__name__)
 class Cluster(object):
     def __init__(self, **kwargs):
         if 'bootstrap_servers' not in kwargs:
-            kargs['bootstrap_servers'] = 'localhost'
+            kwargs['bootstrap_servers'] = 'localhost'
 
         self._brokers = {}
         self._topics = {}

kafka/protocol/group.py

@@ -30,12 +30,6 @@ class JoinGroupRequest(Struct):
     )
 
 
-class ProtocolName(Struct):
-    SCHEMA = Schema(
-        ('assignment_strategy', String('utf-8'))
-    )
-
-
 class ProtocolMetadata(Struct):
     SCHEMA = Schema(
         ('version', Int16),

kafka/protocol/struct.py

@@ -21,7 +21,7 @@ class Struct(AbstractType):
         self.encode = self._encode_self
 
     @classmethod
-    def encode(cls, item):
+    def encode(cls, item): # pylint: disable-msg=E0202
         bits = []
         for i, field in enumerate(cls.SCHEMA.fields):
             bits.append(field.encode(item[i]))