delete using

Assets/BowArrow/Scripts/Expand/SB_EventSystem.cs

@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 using JC.Unity;
-using DG.Tweening;
 
 /**SmartBow_事件系统 */
 public class SB_EventSystem : MonoBehaviour