[media] DaVinci-VPFE-Capture: Delete an unnecessary return statement in vpfe_unregister_ccdc_device()

The script "checkpatch.pl" pointed information out like the following.

WARNING: void function return statements are not generally useful

Thus remove such a statement here.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/davinci/vpfe_capture.c

@@ -281,7 +281,6 @@ void vpfe_unregister_ccdc_device(struct ccdc_hw_device *dev)
 	mutex_lock(&ccdc_lock);
 	ccdc_dev = NULL;
 	mutex_unlock(&ccdc_lock);
-	return;
 }
 EXPORT_SYMBOL(vpfe_unregister_ccdc_device);