Avoid unnecessary unboxing

Change-Id: Ib535352c1b9be6073c0dfc4df6ee8d99577caeea

@@ -114,7 +114,7 @@ public class OvsdbTunnelConfig extends AbstractHandlerBehaviour
         String ip = deviceId.toString().substring(fistColon + 1, lastColon);
         String port = deviceId.toString().substring(lastColon + 1);
         IpAddress ipAddress = IpAddress.valueOf(ip);
-        long portL = Long.valueOf(port).longValue();
+        long portL = Long.parseLong(port);
         return new OvsdbNodeId(ipAddress, portL);
     }