[media] media: pci: saa7164: remove dead code

Remove dead code. The following line of code is never reached:
return SAA_OK;

Addresses-Coverity-ID: 114283

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/pci/saa7164/saa7164-cmd.c

@@ -177,8 +177,6 @@ static int saa7164_cmd_dequeue(struct saa7164_dev *dev)
 		wake_up(q);
 		return SAA_OK;
 	}
-
-	return SAA_OK;
 }
 
 static int saa7164_cmd_set(struct saa7164_dev *dev, struct tmComResInfo *msg,