Tighten visibility of method

Change-Id: Ic82518a6733c6a67030a013b7193a56178061d07
diff --git a/core/net/src/main/java/org/onosproject/net/intent/impl/ObjectiveTracker.java b/core/net/src/main/java/org/onosproject/net/intent/impl/ObjectiveTracker.java
index f11b9e8..dd6dae8 100644
--- a/core/net/src/main/java/org/onosproject/net/intent/impl/ObjectiveTracker.java
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/ObjectiveTracker.java
@@ -414,7 +414,7 @@
         }
     }
 
-    protected void doIntentUpdate() {
+    private void doIntentUpdate() {
         updateScheduled.set(false);
         if (intentService == null) {
             log.warn("Intent service is not bound yet");