remove localhost-only requirement for post upgrade maintenance

Disco.Web/Controllers/UpdateController.cs

@@ -1,6 +1,4 @@
 using Disco.Services.Plugins;
-using System;
-using System.Configuration;
 using System.Web.Mvc;
 
 namespace Disco.Web.Controllers
@@ -8,19 +6,6 @@ namespace Disco.Web.Controllers
     [OutputCache(Duration = 0, Location = System.Web.UI.OutputCacheLocation.None)]
     public partial class UpdateController : Controller
     {
-        protected override void OnActionExecuting(ActionExecutingContext filterContext)
-        {
-            if (!Request.IsLocal && !InitialConfigController.ServerIsCoreSKU.Value && !("true".Equals(ConfigurationManager.AppSettings["DiscoIgnoreVersionUpdate"], StringComparison.OrdinalIgnoreCase)))
-            {
-                filterContext.Result = new ContentResult()
-                {
-                    Content = "Maintenance of Disco ICT is only allowed via a localhost connection",
-                    ContentType = "text/plain"
-                };
-            }
-            base.OnActionExecuting(filterContext);
-        }
-
         public virtual ActionResult Index()
         {
             var status = UpdatePluginsAfterDiscoUpdateTask.UpdateDiscoPlugins(true);