sched: Remove rq->avg_load_per_task

Since commit a2d47777 ("sched: fix stale value in average load per task")
the variable rq->avg_load_per_task is no longer required. Remove it.
Signed-off-by: NJan H. Schönherr <schnhrr@cs.tu-berlin.de>
Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1312189408-17172-1-git-send-email-schnhrr@cs.tu-berlin.deSigned-off-by: NIngo Molnar <mingo@elte.hu>

kernel/sched.c

@@ -520,8 +520,6 @@ struct rq {
 	int cpu;
 	int online;
 
-	unsigned long avg_load_per_task;
-
 	u64 rt_avg;
 	u64 age_stamp;
 	u64 idle_stamp;
@@ -1569,11 +1567,9 @@ static unsigned long cpu_avg_load_per_task(int cpu)
 	unsigned long nr_running = ACCESS_ONCE(rq->nr_running);
 
 	if (nr_running)
-		rq->avg_load_per_task = rq->load.weight / nr_running;
-	else
-		rq->avg_load_per_task = 0;
+		return rq->load.weight / nr_running;
 
-	return rq->avg_load_per_task;
+	return 0;
 }
 
 #ifdef CONFIG_PREEMPT