dm integrity: Remove bi_sector that's only used by commented debug code

drivers/md/dm-integrity.c:1738:13: warning: variable 'bi_sector' set but not used.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=3895Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

drivers/md/dm-integrity.c

@@ -1735,7 +1735,6 @@ static void integrity_metadata(struct work_struct *w)
 		}
 
 		if (unlikely(dio->op == REQ_OP_DISCARD)) {
-			sector_t bi_sector = dio->bio_details.bi_iter.bi_sector;
 			unsigned bi_size = dio->bio_details.bi_iter.bi_size;
 			unsigned max_size = likely(checksums != checksums_onstack) ? PAGE_SIZE : HASH_MAX_DIGESTSIZE;
 			unsigned max_blocks = max_size / ic->tag_size;
@@ -1752,13 +1751,7 @@ static void integrity_metadata(struct work_struct *w)
 					goto error;
 				}
 
-				/*if (bi_size < this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block)) {
-					printk("BUGG: bi_sector: %llx, bi_size: %u\n", bi_sector, bi_size);
-					printk("BUGG: this_step_blocks: %u\n", this_step_blocks);
-					BUG();
-				}*/
 				bi_size -= this_step_blocks << (SECTOR_SHIFT + ic->sb->log2_sectors_per_block);
-				bi_sector += this_step_blocks << ic->sb->log2_sectors_per_block;
 			}
 
 			if (likely(checksums != checksums_onstack))