Index: services/chat.py
--- services/chat.py.orig
+++ services/chat.py
@@ -4,8 +4,8 @@
 
 from . import ServiceHub, ServiceUnavailableError
 
-from mattermostdriver import Driver
-from mattermostdriver.exceptions import InvalidOrMissingParameters, ResourceNotFound, ContentTooLarge
+#from mattermostdriver import Driver
+#from mattermostdriver.exceptions import InvalidOrMissingParameters, ResourceNotFound, ContentTooLarge
 from requests.exceptions import ConnectionError, HTTPError
 
 import hashlib