f2fs: remove unneeded sit_i in macro SIT_BLOCK_OFFSET/START_SEGNO

sit_i in macro SIT_BLOCK_OFFSET/START_SEGNO is not used, remove it.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 853c8f5..a6b90a5 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1403,7 +1403,7 @@
 					unsigned int segno)
 {
 	struct sit_info *sit_i = SIT_I(sbi);
-	unsigned int offset = SIT_BLOCK_OFFSET(sit_i, segno);
+	unsigned int offset = SIT_BLOCK_OFFSET(segno);
 	block_t blk_addr = sit_i->sit_base_addr + offset;
 
 	check_seg_range(sbi, segno);
@@ -1518,7 +1518,7 @@
 				page = NULL;
 			}
 
-			start = START_SEGNO(sit_i, segno);
+			start = START_SEGNO(segno);
 			end = start + SIT_ENTRY_PER_BLOCK - 1;
 
 			/* read sit block that will be updated */