[Opt] 优化虚拟列表 Snap吸附问题

Runtime/RecyclerView/Scroller/Scroller.cs

@@ -106,8 +106,6 @@ namespace AlicizaX.UI
             set => draggingEvent = value;
         }
 
-        public float dragStopTime = 0f;
-
         public bool InputEnabled { get; set; } = true;
 
         protected virtual void Awake()
@@ -216,8 +214,6 @@ namespace AlicizaX.UI
                 return;
             }
             
-            dragStopTime = Time.time;
-
             velocity = GetDelta(eventData);
             position += velocity;