Remove deprecated API from virtual network flow rule store

Change-Id: I3de9a1bf56d87f0c95843f61ccc3f8f2e37d1c5b
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/VirtualNetworkFlowRuleStore.java b/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/VirtualNetworkFlowRuleStore.java
index a5a212a..232e595 100644
--- a/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/VirtualNetworkFlowRuleStore.java
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/VirtualNetworkFlowRuleStore.java
@@ -60,17 +60,6 @@
     Iterable<FlowEntry> getFlowEntries(NetworkId networkId, DeviceId deviceId);
 
     /**
-     * // TODO: Better description of method behavior.
-     * Stores a new flow rule without generating events.
-     *
-     * @param networkId virtual network identifier
-     * @param rule the flow rule to add
-     * @deprecated in Cardinal Release
-     */
-    @Deprecated
-    void storeFlowRule(NetworkId networkId, FlowRule rule);
-
-    /**
      * Stores a batch of flow rules.
      *
      * @param networkId virtual network identifier
diff --git a/incubator/store/src/main/java/org/onosproject/incubator/store/virtual/impl/SimpleVirtualFlowRuleStore.java b/incubator/store/src/main/java/org/onosproject/incubator/store/virtual/impl/SimpleVirtualFlowRuleStore.java
index 4b22d9e..eeb3a7c 100644
--- a/incubator/store/src/main/java/org/onosproject/incubator/store/virtual/impl/SimpleVirtualFlowRuleStore.java
+++ b/incubator/store/src/main/java/org/onosproject/incubator/store/virtual/impl/SimpleVirtualFlowRuleStore.java
@@ -177,8 +177,7 @@
                 .transformAndConcat(Collections::unmodifiableList);
     }
 
-    @Override
-    public void storeFlowRule(NetworkId networkId, FlowRule rule) {
+    private void storeFlowRule(NetworkId networkId, FlowRule rule) {
         storeFlowRuleInternal(networkId, rule);
     }