[PATCH] powerpc: a couple of trivial compile warning fixes

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/pseries/setup.c

@@ -455,8 +455,6 @@ out:
 
 static void pseries_shared_idle_sleep(void)
 {
-	unsigned int cpu = smp_processor_id();
-
 	/*
 	 * Indicate to the HV that we are idle. Now would be
 	 * a good time to find other work to dispatch.