Revert "x86, io-apic: fix nmi_watchdog=1 bootup hang"

This reverts commit 2229ff84f01746d02fb6b79e156fb5cce48c908f.

A better fix from Maciej will be merged.

arch/x86/kernel/apic_32.c

@@ -541,13 +541,11 @@ void __init setup_boot_APIC_clock(void)
 		 * PIT/HPET going.  Otherwise register lapic as a dummy
 		 * device.
 		 */
-		if (nmi_watchdog != NMI_IO_APIC) {
+		if (nmi_watchdog != NMI_IO_APIC)
 			lapic_clockevent.features &= ~CLOCK_EVT_FEAT_DUMMY;
-		} else {
+		else
 			printk(KERN_WARNING "APIC timer registered as dummy,"
 			       " due to nmi_watchdog=1!\n");
-			timer_through_8259 = 1;
-		}
 	}
 
 	/* Setup the lapic or request the broadcast */

arch/x86/kernel/apic_64.c

@@ -413,13 +413,11 @@ void __init setup_boot_APIC_clock(void)
 	 * PIT/HPET going.  Otherwise register lapic as a dummy
 	 * device.
 	 */
-	if (nmi_watchdog != NMI_IO_APIC) {
+	if (nmi_watchdog != NMI_IO_APIC)
 		lapic_clockevent.features &= ~CLOCK_EVT_FEAT_DUMMY;
-	} else {
+	else
 		printk(KERN_WARNING "APIC timer registered as dummy,"
 		       " due to nmi_watchdog=1!\n");
-		timer_through_8259 = 1;
-	}
 
 	setup_APIC_timer();
 }