Remove deprecated "sid" parameter in UI events.

Change-Id: Ib39fe563109068e7a97df809e9dd1f9f7506fbc6
diff --git a/core/api/src/main/java/org/onosproject/ui/chart/ChartRequestHandler.java b/core/api/src/main/java/org/onosproject/ui/chart/ChartRequestHandler.java
index 5c3e2f7..4d5459b 100644
--- a/core/api/src/main/java/org/onosproject/ui/chart/ChartRequestHandler.java
+++ b/core/api/src/main/java/org/onosproject/ui/chart/ChartRequestHandler.java
@@ -49,7 +49,7 @@
     }
 
     @Override
-    public void process(long sid, ObjectNode payload) {
+    public void process(ObjectNode payload) {
         ChartModel cm = createChartModel();
         populateChart(cm, payload);