KVM: x86: remove obsolete EXPORT... of handle_mmio_page_fault

handle_mmio_page_fault() was recently moved to be an internal-only
MMU function, i.e. it's static and no longer defined in kvm_host.h.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

arch/x86/kvm/mmu.c

@@ -3715,7 +3715,6 @@ static int handle_mmio_page_fault(struct kvm_vcpu *vcpu, u64 addr, bool direct)
 	 */
 	return RET_PF_RETRY;
 }
-EXPORT_SYMBOL_GPL(handle_mmio_page_fault);
 
 static bool page_fault_handle_page_track(struct kvm_vcpu *vcpu,
 					 u32 error_code, gfn_t gfn)