ocfs2: clean up some dead code

clean up some unused functions and parameters.

Link: http://lkml.kernel.org/r/598A5E21.2080807@huawei.com
Signed-off-by: Jun Piao <piaojun@huawei.com>
Reviewed-by: Alex Chen <alex.chen@huawei.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 0c39d71..9a50f22 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -320,7 +320,6 @@ struct ocfs2_super
 	u64 system_dir_blkno;
 	u64 bitmap_blkno;
 	u32 bitmap_cpg;
-	u8 *uuid;
 	char *uuid_str;
 	u32 uuid_hash;
 	u8 *vol_label;
@@ -388,9 +387,8 @@ struct ocfs2_super
 	unsigned int	osb_resv_level;
 	unsigned int	osb_dir_resv_level;
 
-	/* Next three fields are for local node slot recovery during
+	/* Next two fields are for local node slot recovery during
 	 * mount. */
-	int dirty;
 	struct ocfs2_dinode *local_alloc_copy;
 	struct ocfs2_quota_recovery *quota_rec;