KVM: Drop stale kvm_is_transparent_hugepage() declaration

kvm_is_transparent_hugepage() was removed in commit 205d76ff ("KVM:
Remove kvm_is_transparent_hugepage() and PageTransCompoundMap()") but its
declaration in include/linux/kvm_host.h persisted. Drop it.

Fixes: 205d76ff (""KVM: Remove kvm_is_transparent_hugepage() and PageTransCompoundMap()")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211018151407.2107363-1-vkuznets@redhat.com

include/linux/kvm_host.h

@@ -1174,7 +1174,6 @@ int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
 
 bool kvm_is_reserved_pfn(kvm_pfn_t pfn);
 bool kvm_is_zone_device_pfn(kvm_pfn_t pfn);
-bool kvm_is_transparent_hugepage(kvm_pfn_t pfn);
 
 struct kvm_irq_ack_notifier {
 	struct hlist_node link;