Remove unused using

Author: mattbrailsford

src/Umbraco.Commerce.Checkout/Web/Controllers/UmbracoCommerceCheckoutBaseController.cs

@@ -5,7 +5,6 @@
 using Microsoft.Extensions.Logging;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Models.PublishedContent;
-using Umbraco.Cms.Core.Web;
 using Umbraco.Cms.Web.Common.Controllers;
 using Umbraco.Commerce.Checkout.Web.Controllers.Filters;
 using Umbraco.Commerce.Core.Api;