fat: Remove fat_clusters_flush()

This removes unneeded fat_clusters_flush().
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/fat/fatent.c

@@ -585,8 +585,6 @@ int fat_free_clusters(struct inode *inode, int cluster)
 		brelse(bhs[i]);
 	unlock_fat(sbi);
 
-	fat_clusters_flush(sb);
-
 	return err;
 }