1、删除无用类

2、调整定时逻辑，将定时改为框架的事件总线
3、电梯业务逻辑代码调整

common/Tnb.Common.Core/EventBus/Constants/EventSubscribeEventConsts.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Tnb.Common.Core.EventBus.Constants
+{
+    public class EventSubscribeEventConsts
+    {
+        /// <summary>
+        /// 预任务执行EventId
+        /// </summary>
+        public const string TaskStatusChangeEventId = "DisTask:TaskStatusChange";
+
+    }
+}