remove dependency on Six
diff --git a/lib/py/src/server/TServer.py b/lib/py/src/server/TServer.py
index 8b2f938..81144f1 100644
--- a/lib/py/src/server/TServer.py
+++ b/lib/py/src/server/TServer.py
@@ -17,7 +17,7 @@
 # under the License.
 #
 
-from six.moves import queue
+import queue
 import logging
 import os
 import threading