Move BGP listen port configuration to BgpSessionManager component

Change-Id: I445bff180740fededacaa59441fc53332cc3d482
diff --git a/apps/routing/src/main/java/org/onosproject/routing/Router.java b/apps/routing/src/main/java/org/onosproject/routing/Router.java
index 494c190..1db8e0b 100644
--- a/apps/routing/src/main/java/org/onosproject/routing/Router.java
+++ b/apps/routing/src/main/java/org/onosproject/routing/Router.java
@@ -124,7 +124,7 @@
         this.fibComponent = checkNotNull(listener);
         this.hostService.addListener(hostListener);
 
-        bgpService.start(new InternalRouteListener(), 2000);
+        bgpService.start(new InternalRouteListener());
 
         bgpUpdatesExecutor.execute(new Runnable() {
             @Override