GUI -- Rename UIMessageHandlerTwo => UIMessageHandler. Also, make bindHandlers() private.

Change-Id: Id36e220c1285b88b8b4db0e106ef063bd8b9bfd1
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/LinkViewMessageHandler.java b/web/gui/src/main/java/org/onosproject/ui/impl/LinkViewMessageHandler.java
index 55291c4..06349b4 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/LinkViewMessageHandler.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/LinkViewMessageHandler.java
@@ -24,7 +24,7 @@
 import org.onosproject.net.LinkKey;
 import org.onosproject.net.link.LinkService;
 import org.onosproject.ui.RequestHandler;
-import org.onosproject.ui.UiMessageHandlerTwo;
+import org.onosproject.ui.UiMessageHandler;
 import org.onosproject.ui.impl.TopologyViewMessageHandlerBase.BiLink;
 import org.onosproject.ui.table.AbstractTableRow;
 import org.onosproject.ui.table.RowComparator;
@@ -42,7 +42,7 @@
 /**
  * Message handler for link view related messages.
  */
-public class LinkViewMessageHandler extends UiMessageHandlerTwo {
+public class LinkViewMessageHandler extends UiMessageHandler {
 
     private static final String LINK_DATA_REQ = "linkDataRequest";