Removed commented code

Author: Auldrin-Possa

DigitalLearningSolutions.Web.Tests/Controllers/SuperAdmin/CentresControllerTests.cs

@@ -1,6 +1,4 @@
-//using DigitalLearningSolutions.Data.DataServices;
-//using DigitalLearningSolutions.Data.DataServices.SelfAssessmentDataService;
-using DigitalLearningSolutions.Data.Models;
+using DigitalLearningSolutions.Data.Models;
 using DigitalLearningSolutions.Data.Models.Centres;
 using DigitalLearningSolutions.Data.Models.SuperAdmin;
 using DigitalLearningSolutions.Web.Controllers.SuperAdmin.Centres;