Revert "feat: 界面更新时间根据所选客户端类型决定（外服时区还要改）"

This reverts commit 11f4212cb8.
3ddeee1d 也在这个commit里面revert了

cherrypick放到stage_manager_overseas branch里等之后一起merge

src/MaaWpfGui/Helper/Utils.cs

@@ -58,28 +58,13 @@ namespace MaaWpfGui
             }
         }
 
-        private static string _clientType = ViewStatusStorage.Get("Start.ClientType", string.Empty);
-
-        public static string ClientType { get => _clientType; set => _clientType = value; }
-
-        private static readonly Dictionary<string, int> _clientTypeTimeOffsetMap = new Dictionary<string, int>
-        {
-            { string.Empty, 4 },
-            { "Official", 4 },
-            { "Bilibili", 4 },
-            { "txwy", 4 },
-            { "YoStarEN", 4 },
-            { "YoStarJP", 5 },
-            { "YoStarKR", 4 },
-        };
-
         /// <summary>
         /// 获取yj历时间
         /// </summary>
         /// <returns>yj历时间</returns>
         public static DateTime GetYJTimeNow()
         {
-            return DateTime.UtcNow.AddHours(_clientTypeTimeOffsetMap[ClientType]);
+            return DateTime.UtcNow.AddHours(4);
         }
 
         /// <summary>
@@ -116,7 +101,7 @@ namespace MaaWpfGui
         /// <returns>yj历格式的时间</returns>
         public static DateTime ToYJTime(DateTime dt)
         {
-            return dt.AddHours(_clientTypeTimeOffsetMap[ClientType]);
+            return dt.AddHours(4);
         }
 
         private static readonly JObject _itemList = new JObject();

src/MaaWpfGui/Main/SettingsViewModel.cs

@@ -548,7 +548,6 @@ namespace MaaWpfGui
             set
             {
                 SetAndNotify(ref _clientType, value);
-                Utils.ClientType = value;
                 ViewStatusStorage.Set("Start.ClientType", value);
                 UpdateWindowTitle(); /* 每次修改客户端时更新WindowTitle */
                 _container.Get<TaskQueueViewModel>().UpdateStageList(true);