Remove dead code from EventHandlerBase

lib/tfw/event_handler_base.py

@@ -45,13 +45,6 @@ class EventHandlerBase(ABC):
     def cleanup(self):
         pass
 
-    def message_other(self, key, data):
-        message = {
-            'key': key,
-            'data': data
-        }
-        self.server_connector.send(key, message)
-
     def subscribe(self, key):
         if key not in self.subscriptions:
             self.subscriptions.add(key)