sched/numa: Remove unused numa_stats::nr_running field

nr_running in struct numa_stats is not used anywhere in the code.

Remove it.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1535548752-4434-3-git-send-email-vincent.guittot@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

kernel/sched/fair.c

@@ -1454,8 +1454,6 @@ struct numa_stats {
 
 	/* Total compute capacity of CPUs on a node */
 	unsigned long compute_capacity;
-
-	unsigned int nr_running;
 };
 
 /*
@@ -1469,7 +1467,6 @@ static void update_numa_stats(struct numa_stats *ns, int nid)
 	for_each_cpu(cpu, cpumask_of_node(nid)) {
 		struct rq *rq = cpu_rq(cpu);
 
-		ns->nr_running += rq->nr_running;
 		ns->load += weighted_cpuload(rq);
 		ns->compute_capacity += capacity_of(cpu);
 	}