ONOS-1864 -- Topology view sending events after view changed
 - it helps if we remove the model listeners when the UI tells us to stop monitoring topology.

Change-Id: I272a664cdddecf584b20e496eebed3275fc9a9aa
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java
index 82b7a78..700e57e 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandler.java
@@ -289,6 +289,7 @@
 
         @Override
         public void process(long sid, ObjectNode payload) {
+            removeListeners();
             stopSummaryMonitoring();
             traffic.stopMonitoring();
         }