IEnumerator testSpine(){
      GameObject obj=GameTool.Tool.LoadPrefab("Prefabs/BattleScene/Actor/p1001",transform);

  yield return new WaitForSeconds(3f);

  GameObject.Destroy(obj);
  obj=null;
  Resources.UnloadUnusedAssets();
  //Resources.UnloadAsset(obj);
   }

I try to create an SpineObject, and destroy it ，but with Profiler,SpineObject Ref count is 1,
It has not been destroyed.
Why?

help me~~
unity Profiler message:
Referenced By:
skeletonDataAsset(MonoBehaviour)
AtlasAsset(MonoBehaviour)
ManagedStaticReferences()