nvdimm: no need to overwrite get_vmstate_memory_region()

Our parent class (PC_DIMM) provides exactly the same function.

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20180619134141.29478-7-david@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/mem/nvdimm.c

@@ -166,11 +166,6 @@ static void nvdimm_write_label_data(NVDIMMDevice *nvdimm, const void *buf,
     memory_region_set_dirty(mr, backend_offset, size);
 }
 
-static MemoryRegion *nvdimm_get_vmstate_memory_region(PCDIMMDevice *dimm)
-{
-    return host_memory_backend_get_memory(dimm->hostmem, &error_abort);
-}
-
 static void nvdimm_class_init(ObjectClass *oc, void *data)
 {
     PCDIMMDeviceClass *ddc = PC_DIMM_CLASS(oc);
@@ -178,7 +173,6 @@ static void nvdimm_class_init(ObjectClass *oc, void *data)
 
     ddc->realize = nvdimm_realize;
     ddc->get_memory_region = nvdimm_get_memory_region;
-    ddc->get_vmstate_memory_region = nvdimm_get_vmstate_memory_region;
 
     nvc->read_label_data = nvdimm_read_label_data;
     nvc->write_label_data = nvdimm_write_label_data;