scsi: fnic: Remove unused functions fnic_scsi_host_start/end_tag()

The functions fnic_scsi_host_start_tag() and fnic_scsi_host_end_tag() are
not used anywhere, so remove them.

silence the warnings:
drivers/scsi/fnic/fnic_scsi.c:2175:1: warning: unused function 'fnic_scsi_host_start_tag'
drivers/scsi/fnic/fnic_scsi.c:2196:1: warning: unused function 'fnic_scsi_host_end_tag'

Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/20230829010222.33393-1-yang.lee@linux.alibaba.com
Acked-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: Yang Li

drivers/scsi/fnic/fnic_scsi.c

@@ -2167,39 +2167,6 @@ static int fnic_clean_pending_aborts(struct fnic *fnic,
 	return ret;
 }
 
-/*
- * fnic_scsi_host_start_tag
- * Allocates tagid from host's tag list
- **/
-static inline int
-fnic_scsi_host_start_tag(struct fnic *fnic, struct scsi_cmnd *sc)
-{
-	struct request *rq = scsi_cmd_to_rq(sc);
-	struct request_queue *q = rq->q;
-	struct request *dummy;
-
-	dummy = blk_mq_alloc_request(q, REQ_OP_WRITE, BLK_MQ_REQ_NOWAIT);
-	if (IS_ERR(dummy))
-		return SCSI_NO_TAG;
-
-	rq->tag = dummy->tag;
-	sc->host_scribble = (unsigned char *)dummy;
-
-	return dummy->tag;
-}
-
-/*
- * fnic_scsi_host_end_tag
- * frees tag allocated by fnic_scsi_host_start_tag.
- **/
-static inline void
-fnic_scsi_host_end_tag(struct fnic *fnic, struct scsi_cmnd *sc)
-{
-	struct request *dummy = (struct request *)sc->host_scribble;
-
-	blk_mq_free_request(dummy);
-}
-
 /*
  * SCSI Eh thread issues a Lun Reset when one or more commands on a LUN
  * fail to get aborted. It calls driver's eh_device_reset with a SCSI command