sched/rt: Remove useless if from cleanup pick_next_task_rt()

_pick_next_task_rt() never returns NULL.

Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1410529321.3569.26.camel@tkhai
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

kernel/sched/rt.c

@@ -1468,8 +1468,7 @@ pick_next_task_rt(struct rq *rq, struct task_struct *prev)
 	p = _pick_next_task_rt(rq);
 
 	/* The running task is never eligible for pushing */
-	if (p)
+	dequeue_pushable_task(rq, p);
-		dequeue_pushable_task(rq, p);
 
 	set_post_schedule(rq);