Pull out IntentWorker from IntentManager

- IntentWorker is placed in phase package
- Make public IntentProcessPhase subclasses package private now

Change-Id: Ie7d218fe5d8a516f3913ff8881d9d17cfd8e4c46
diff --git a/core/net/src/main/java/org/onosproject/net/intent/impl/phase/Withdrawn.java b/core/net/src/main/java/org/onosproject/net/intent/impl/phase/Withdrawn.java
index 069a989..b8e724b 100644
--- a/core/net/src/main/java/org/onosproject/net/intent/impl/phase/Withdrawn.java
+++ b/core/net/src/main/java/org/onosproject/net/intent/impl/phase/Withdrawn.java
@@ -24,15 +24,15 @@
 /**
  * Represents a phase where an intent has been withdrawn.
  */
-public final class Withdrawn extends FinalIntentProcessPhase {
+final class Withdrawn extends FinalIntentProcessPhase {
 
     private final IntentData intentData;
 
-    public Withdrawn(IntentData intentData) {
+    Withdrawn(IntentData intentData) {
         this(intentData, WITHDRAWING);
     }
 
-    public Withdrawn(IntentData intentData, IntentState newState) {
+    Withdrawn(IntentData intentData, IntentState newState) {
         this.intentData = checkNotNull(intentData);
         this.intentData.setState(newState);
     }