Revert "ARC: SMP resurrect foss-for-synopsys-dwc-arc-processors#21: r…

…equest_irq() workaround for clockevent Timer"

This reverts commit 2985184.

Next commit uses the correct APIs, so we no longer need this hack

arch/arc/kernel/smp.c

@@ -124,9 +124,6 @@ void __cpuinit start_kernel_secondary(void)
 
 	arc_clockevent_init();
 
-	/* Hack for request_irq() failing on non-boot CPU */
-	arch_unmask_irq(TIMER0_INT);
-
 	local_irq_enable();
 	preempt_disable();
 	cpu_idle();

arch/arc/kernel/time.c

@@ -180,7 +180,7 @@ void __cpuinit arc_clockevent_init(void)
 	clockevents_register_device(evt);
 
 	rc = request_irq(TIMER0_INT, timer_irq_handler,
-			 IRQF_TIMER | IRQF_DISABLED | IRQF_PERCPU | IRQF_SHARED,
+			 IRQF_TIMER | IRQF_DISABLED | IRQF_PERCPU,
 			 "Timer0 (clock-evt-dev)", evt);
 
 	if (rc)