Remove "public" to follow our convention

Change-Id: Ic5fa8744cbcb4c704780c8467ae0f31fce3327ce
diff --git a/apps/routing-api/src/main/java/org/onosproject/routing/RouteListener.java b/apps/routing-api/src/main/java/org/onosproject/routing/RouteListener.java
index f1a3d2b..8575216 100644
--- a/apps/routing-api/src/main/java/org/onosproject/routing/RouteListener.java
+++ b/apps/routing-api/src/main/java/org/onosproject/routing/RouteListener.java
@@ -26,5 +26,5 @@
      *
      * @param routeUpdates the collection with updated route information
      */
-    public void update(Collection<RouteUpdate> routeUpdates);
+    void update(Collection<RouteUpdate> routeUpdates);
 }