sched/deadline: Don't check CONFIG_SMP in switched_from_dl()

There are both UP and SMP version of pull_dl_task(), so don't need
to check CONFIG_SMP in switched_from_dl();
Signed-off-by: NWanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Juri Lelli <juri.lelli@arm.com>
Cc: Kirill Tkhai <ktkhai@parallels.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1414708776-124078-6-git-send-email-wanpeng.li@linux.intel.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

kernel/sched/deadline.c

@@ -1637,7 +1637,6 @@ static void switched_from_dl(struct rq *rq, struct task_struct *p)
 
 	__dl_clear_params(p);
 
-#ifdef CONFIG_SMP
 	/*
 	 * Since this might be the only -deadline task on the rq,
 	 * this is the right place to try to pull some other one
@@ -1648,7 +1647,6 @@ static void switched_from_dl(struct rq *rq, struct task_struct *p)
 
 	if (pull_dl_task(rq))
 		resched_curr(rq);
-#endif
 }
 
 /*