oom: kill duplicate OOM_DISABLE check

select_bad_process() and badness() have the same OOM_DISABLE check.  This
patch kills one.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/oom_kill.c

@@ -350,9 +350,6 @@ static struct task_struct *select_bad_process(unsigned long *ppoints,
 			*ppoints = ULONG_MAX;
 		}
 
-		if (p->signal->oom_adj == OOM_DISABLE)
-			continue;
-
 		points = badness(p, mem, nodemask, uptime.tv_sec);
 		if (points > *ppoints || !chosen) {
 			chosen = p;