Fix multi tenant

Tsi1.Api/Tsi1.BusinessLayer/Interfaces/ITenantService.cs

-using System;
+using System;
 using System.Collections.Generic;
 using System.Text;
 using System.Threading.Tasks;
@@ -14,7 +14,5 @@ namespace Tsi1.BusinessLayer.Interfaces
         Task<ServiceResult<List<TenantPreviewDto>>> GetAll();
 
         Task<ServiceResult<TenantPreviewDto>> Create(TenantCreateDto newTenant);
-
-        //Task<ServiceResult<TenantPreviewDto>> CreateUdelarAdmin(TenantCreateDto newTenant);
     }
 }