jfs: remove incorrect comment in jfs_superblock

There is a comment in struct jfs_superblock that incorrectly labels
a 128-byte boundary. It has never been correct.

Shenghui Wang proposed moving it to the correct spot, before s_xlogpxd,
but at this point, I believe it is best just to remove it.
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Reported-by: Shenghui Wang <shhuiw@foxmail.com>

fs/jfs/jfs_superblock.h

@@ -98,8 +98,6 @@ struct jfs_superblock {
 	__le64 s_xsize;		/* 8: extendfs s_size */
 	pxd_t s_xfsckpxd;	/* 8: extendfs fsckpxd */
 	pxd_t s_xlogpxd;	/* 8: extendfs logpxd */
-	/* - 128 byte boundary - */
-
 	char s_uuid[16];	/* 16: 128-bit uuid for volume */
 	char s_label[16];	/* 16: volume label */
 	char s_loguuid[16];	/* 16: 128-bit uuid for log device */