jfs: remove unused MAXL2PAGES

This has never been used.
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: jfs-discussion@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org

fs/jfs/jfs_dmap.c

@@ -4027,7 +4027,6 @@ static int dbGetL2AGSize(s64 nblocks)
  */
 #define MAXL0PAGES	(1 + LPERCTL)
 #define MAXL1PAGES	(1 + LPERCTL * MAXL0PAGES)
-#define MAXL2PAGES	(1 + LPERCTL * MAXL1PAGES)
 
 /*
  * convert number of map pages to the zero origin top dmapctl level