sata_fsl: remove dead code in tag retrieval

We can never pass in the internal tag to this helper, it'll
always be the hardware tag. So there's no need to check and
do an internal translation of that tag.

Signed-off-by: Jens Axboe <[e-mail]>
Signed-off-by: Tejun Heo <[e-mail]>

drivers/ata/sata_fsl.c

···
 {
 	/* We let libATA core do actual (queue) tag allocation */
 
-	/* all non NCQ/queued commands should have tag#0 */
-	if (ata_tag_internal(tag)) {
-		DPRINTK("mapping internal cmds to tag#0\n");
-		return 0;
-	}
-
 	if (unlikely(tag >= SATA_FSL_QUEUE_DEPTH)) {
 		DPRINTK("tag %d invalid : out of range\n", tag);
 		return 0;