ocfs2: dlm: remove redundant code

Found this when do patch review, remove to make it clear and save a
little cpu time.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ocfs2/dlm/dlmrecovery.c

@@ -2457,10 +2457,6 @@ static void __dlm_hb_node_down(struct dlm_ctxt *dlm, int idx)
 	 * perhaps later we can genericize this for other waiters. */
 	wake_up(&dlm->migration_wq);
 
-	if (test_bit(idx, dlm->recovery_map))
-		mlog(0, "domain %s, node %u already added "
-		     "to recovery map!\n", dlm->name, idx);
-	else
 	set_bit(idx, dlm->recovery_map);
 }