KVM: Don't complain about cpu erratum AA15

It slows down Windows x64 horribly.

Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c
index 10845b7..d28c848 100644
--- a/drivers/kvm/vmx.c
+++ b/drivers/kvm/vmx.c
@@ -1566,8 +1566,6 @@
 			skip_emulated_instruction(vcpu);
 			return 1;
 		case 8:
-			printk(KERN_DEBUG "handle_cr: read CR8 "
-			       "cpu erratum AA15\n");
 			vcpu_load_rsp_rip(vcpu);
 			vcpu->regs[reg] = vcpu->cr8;
 			vcpu_put_rsp_rip(vcpu);