block: remove unused nseg parameter

We are no longer using nr_segs, after blk_mq_attempt_bio_merge was moved
out of blk_mq_get_new_request.

Signed-off-by: Nitesh Shetty <nj.shetty@samsung.com>
Link: https://lore.kernel.org/r/20250401044348.15588-1-nj.shetty@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Author: nj-shetty

block/blk-mq.c

@@ -2965,8 +2965,7 @@ static bool blk_mq_attempt_bio_merge(struct request_queue *q,
 
 static struct request *blk_mq_get_new_requests(struct request_queue *q,
 					       struct blk_plug *plug,
-					       struct bio *bio,
-					       unsigned int nsegs)
+					       struct bio *bio)
 {
 	struct blk_mq_alloc_data data = {
 		.q		= q,
@@ -3125,7 +3124,7 @@ void blk_mq_submit_bio(struct bio *bio)
 	if (rq) {
 		blk_mq_use_cached_rq(rq, plug, bio);
 	} else {
-		rq = blk_mq_get_new_requests(q, plug, bio, nr_segs);
+		rq = blk_mq_get_new_requests(q, plug, bio);
 		if (unlikely(!rq)) {
 			if (bio->bi_opf & REQ_NOWAIT)
 				bio_wouldblock_error(bio);