[IA64] Turn off pending guest timer printk

Per discussion in January, this printk can be turned off as it
is just indicating that a condition occurred which Kevin fixed.

http://lists.xensource.com/archives/html/xen-ia64-devel/2006-01/msg00117.html

The similar "Oops: timer tick before it's due" from Linux
is probably related but not understood or fixed.

Signed-off-by: Dan Magenheimer <dan.magenheimer@hp.com>

xen/arch/ia64/xen/vcpu.c

@@ -686,7 +686,7 @@ check_start:
 	if (vector == (PSCB(vcpu,itv) & 0xff)) {
 		uint64_t now = ia64_get_itc();
 		if (now < PSCBX(vcpu,domain_itm)) {
-			printk("Ooops, pending guest timer before its due\n");
+//			printk("Ooops, pending guest timer before its due\n");
 			PSCBX(vcpu,irr[i]) &= ~mask;
 			goto check_start;
 		}