(Vnet) Deprecate tunnel operations

There are no dependency for tunnel operations.
So, we decide to remove all tunnel relation operations
for virtual networks.

Change-Id: Id94ed455f6eca018b51bb2c89383ec083e74ad08
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/provider/VirtualNetworkProvider.java b/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/provider/VirtualNetworkProvider.java
index f2251c6..9841f12 100644
--- a/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/provider/VirtualNetworkProvider.java
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/virtual/provider/VirtualNetworkProvider.java
@@ -46,7 +46,9 @@
      * @param src       source connection point
      * @param dst       destination connection point
      * @return new tunnel's id
+     * @deprecated in Loon Release (1.11)
      */
+    @Deprecated
     TunnelId createTunnel(NetworkId networkId, ConnectPoint src, ConnectPoint dst);
 
     /**
@@ -54,7 +56,9 @@
      *
      * @param networkId virtual network identifier
      * @param tunnelId  tunnel identifier
+     * @deprecated in Loon Release (1.11)
      */
+    @Deprecated
     void destroyTunnel(NetworkId networkId, TunnelId tunnelId);
 
 }