(client) chore:Clean code

Client/Assets/Scripts/Prefab/SpriteAnimator.cs

@@ -1,4 +1,3 @@
-using System;
 using Base;
 using UnityEngine;
 
@@ -26,7 +25,7 @@ namespace Prefab
         // ITick接口实现
         public void Tick()
         {
-            var deltaTime=Time.deltaTime;
+            var deltaTime = Time.deltaTime;
             if (_isPaused)
             {
                 HandlePausedState();