删除冗余代码

Areas/Api/Controllers/Main/UserSwapWhiteController.cs

@@ -11,7 +11,6 @@ using MySystem.Models.Main1;
 using MySystem.Service.Main1;
 using LitJson;
 using Library;
-using MySystem.Service.Main1;
 
 namespace MySystem.Areas.Api.Controllers.v1.Main1
 {