Limit visibility of methods to private

The methods which are invoked only from the same class are
changed to private.

Change-Id: I5ac6bb00e6f6ded8a5c4f0f7f8abc9be4982eedd
diff --git a/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java b/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java
index e130e67..b273965 100644
--- a/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java
+++ b/src/main/java/net/onrc/onos/apps/sdnip/SdnIp.java
@@ -429,7 +429,7 @@
         }
     }
 
-    public void processRibAdd(RibUpdate update) {
+    private void processRibAdd(RibUpdate update) {
         synchronized (this) {
             Prefix prefix = update.getPrefix();
 
@@ -615,7 +615,7 @@
         }
     }
 
-    public void processRibDelete(RibUpdate update) {
+    private void processRibDelete(RibUpdate update) {
         synchronized (this) {
             Prefix prefix = update.getPrefix();