Hz: remove listeners on deactivate

Change-Id: I544917508cd4b9513e3fcd3a100c44928954f413
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/DistributedApplicationIdStore.java b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/DistributedApplicationIdStore.java
index 884bc12..4c3aa7a 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/DistributedApplicationIdStore.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/core/impl/DistributedApplicationIdStore.java
@@ -22,6 +22,7 @@
 import com.hazelcast.core.EntryListener;
 import com.hazelcast.core.IAtomicLong;
 import com.hazelcast.core.MapEvent;
+
 import org.apache.felix.scr.annotations.Activate;
 import org.apache.felix.scr.annotations.Component;
 import org.apache.felix.scr.annotations.Deactivate;
@@ -54,6 +55,8 @@
 
     protected Map<Short, DefaultApplicationId> appIds = new ConcurrentHashMap<>();
 
+    private String listenerId;
+
 
     @Override
     @Activate
@@ -73,7 +76,7 @@
         lastAppId = theInstance.getAtomicLong("applicationId");
 
         appIdsByName = new SMap<>(theInstance.<byte[], byte[]>getMap("appIdsByName"), this.serializer);
-        appIdsByName.addEntryListener((new RemoteAppIdEventHandler()), true);
+        listenerId = appIdsByName.addEntryListener((new RemoteAppIdEventHandler()), true);
 
         primeAppIds();
 
@@ -82,6 +85,7 @@
 
     @Deactivate
     public void deactivate() {
+        appIdsByName.removeEntryListener(listenerId);
         log.info("Stopped");
     }