public static void DeleteEffectPrefab(GameObject tarPrefab)
{
// delete preview image
string filename = NgFile.CombinePath(FXMakerMain.inst.GetResourceDir(FXMakerMain.TOOLDIR_TYPE.TEMPPREVIEWTEXTURE), NgAsset.GetPrefabThumbFilename(tarPrefab));
NgUtil.LogMessage("DeleteEffectPrefab() - delete preview - " + filename);
AssetDatabase.MoveAssetToTrash(filename);
// AssetDatabase.DeleteAsset(filename);
// check clipboard
FXMakerClipboard.inst.CheckDeletePrefab(tarPrefab);
// delete prefab
NgAsset.DeletePrefab(tarPrefab);
AssetDatabaseRefresh();
AssetDatabaseSaveAssets();
}