[PATCH] unexport idle_cpu

I didn't find any possible modular usage in the kernel.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Acked-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

kernel/sched.c

@@ -3563,8 +3563,6 @@ int idle_cpu(int cpu)
 	return cpu_curr(cpu) == cpu_rq(cpu)->idle;
 }
 
-EXPORT_SYMBOL_GPL(idle_cpu);
-
 /**
  * idle_task - return the idle task for a given cpu.
  * @cpu: the processor in question.