Merge pull request #4725 from kevin-bates/cleanup-debug

Remove verbose debug statement in gateway mode

Author: minrk

notebook/gateway/handlers.py

@@ -87,7 +87,6 @@ def open(self, kernel_id, *args, **kwargs):
 
     def on_message(self, message):
         """Forward message to gateway web socket handler."""
-        self.log.debug("Sending message to gateway: {}".format(message))
         self.gateway.on_message(message)
 
     def write_message(self, message, binary=False):