Staging: hv: netvsc_drv: Get rid of call to cleanup()

cleanup() is an empty function; get rid of it.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NAbhishek Kane <v-abkane@microsoft.com>
Signed-off-by: NHank Janssen <hjanssen@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/netvsc_drv.c

@@ -444,7 +444,6 @@ static int netvsc_drv_exit_cb(struct device *dev, void *data)
 
 static void netvsc_drv_exit(void)
 {
-	struct netvsc_driver *netvsc_drv_obj = &g_netvsc_drv;
 	struct hv_driver *drv = &g_netvsc_drv.base;
 	struct device *current_dev;
 	int ret;
@@ -466,9 +465,6 @@ static void netvsc_drv_exit(void)
 		device_unregister(current_dev);
 	}
 
-	if (netvsc_drv_obj->base.cleanup)
-		netvsc_drv_obj->base.cleanup(&netvsc_drv_obj->base);
-
 	vmbus_child_driver_unregister(&drv->driver);
 
 	return;