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

This reverts commit 2229ff84f01746d02fb6b79e156fb5cce48c908f.

A better fix from Maciej will be merged.
diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 3cebf91..4b99b1b 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -541,13 +541,11 @@
 		 * 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 */