remove KVM_CAP_MAX_VCPUS hack

As we now have the header file in our repository, we can safely follow
the recommendation in kvm.c and remove the hack adding the
KVM_CAP_MAX_VCPUS macro.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
diff --git a/kvm.c b/kvm.c
index 78dd7c0..10ed230 100644
--- a/kvm.c
+++ b/kvm.c
@@ -232,14 +232,6 @@
 	return ret;
 }
 
-/*
- * The following hack should be removed once 'x86: Raise the hard
- * VCPU count limit' makes it's way into the mainline.
- */
-#ifndef KVM_CAP_MAX_VCPUS
-#define KVM_CAP_MAX_VCPUS 66
-#endif
-
 int kvm__max_cpus(struct kvm *kvm)
 {
 	int ret;