Remove unreferenced fields

Change-Id: Ib8122e9a70d56524ac6885ab79cab73f39a2736e
diff --git a/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java b/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java
index 2c5349f..2f493a0 100644
--- a/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java
+++ b/apps/optical/src/main/java/org/onosproject/optical/OpticalPathProvisioner.java
@@ -21,7 +21,6 @@
 import org.apache.felix.scr.annotations.Deactivate;
 import org.apache.felix.scr.annotations.Reference;
 import org.apache.felix.scr.annotations.ReferenceCardinality;
-import org.onlab.util.KryoNamespace;
 import org.onosproject.cluster.ClusterService;
 import org.onosproject.cluster.NodeId;
 import org.onosproject.core.ApplicationId;
@@ -49,10 +48,6 @@
 import org.onosproject.net.topology.LinkWeight;
 import org.onosproject.net.topology.PathService;
 import org.onosproject.net.topology.TopologyEdge;
-import org.onosproject.net.topology.TopologyService;
-import org.onosproject.store.serializers.KryoNamespaces;
-import org.onosproject.store.service.Serializer;
-import org.onosproject.store.service.StorageService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -80,9 +75,6 @@
     protected static final Logger log = LoggerFactory
             .getLogger(OpticalPathProvisioner.class);
 
-    private static final Serializer SERIALIZER = Serializer.using(
-            new KryoNamespace.Builder().register(KryoNamespaces.API).build());
-
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     private IntentService intentService;
 
@@ -90,9 +82,6 @@
     protected PathService pathService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
-    protected TopologyService topologyService;
-
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected CoreService coreService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
@@ -105,9 +94,6 @@
     protected ClusterService clusterService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
-    protected StorageService storageService;
-
-    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
     protected DeviceService deviceService;
 
     @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)