Remove deprecated ConnectionError (dpkp#1816)

jeffwidman · web-flow · commit f61b08c8549f · 2019-10-11T12:07:18.000-07:00
This has been deprecated for a bit in favor of `KafkaConnectionError`
because it conflicts with Python's built-in `ConnectionError`.

Time to remove it as part of cleaning up our old deprecated code.
diff --git a/kafka/errors.py b/kafka/errors.py
@@ -468,10 +468,6 @@ class KafkaConnectionError(KafkaError):
     invalid_metadata = True
 
 
-class ConnectionError(KafkaConnectionError):
-    """Deprecated"""
-
-
 class ProtocolError(KafkaError):
     pass
 
