vhost-vdpa: remove the unused vhost_vdpa_get_acked_features()

No user for this helper, let's remove it.

Signed-off-by: Jason Wang <jasowang@redhat.com>

include/net/vhost-vdpa.h

@@ -15,7 +15,6 @@
 #define TYPE_VHOST_VDPA "vhost-vdpa"
 
 struct vhost_net *vhost_vdpa_get_vhost_net(NetClientState *nc);
-uint64_t vhost_vdpa_get_acked_features(NetClientState *nc);
 
 extern const int vdpa_feature_bits[];
 

net/vhost-vdpa.c

@@ -68,15 +68,6 @@ VHostNetState *vhost_vdpa_get_vhost_net(NetClientState *nc)
     return s->vhost_net;
 }
 
-uint64_t vhost_vdpa_get_acked_features(NetClientState *nc)
-{
-    VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc);
-    assert(nc->info->type == NET_CLIENT_DRIVER_VHOST_VDPA);
-    s->acked_features = vhost_net_get_acked_features(s->vhost_net);
-
-    return s->acked_features;
-}
-
 static int vhost_vdpa_net_check_device_id(struct vhost_net *net)
 {
     uint32_t device_id;