Cleanup - Fixed Namespace

Author: Greg Bielleman

src/ServiceControl/CustomChecks/CustomCheckNotifications.cs

@@ -1,11 +1,10 @@
-namespace ServiceControl.MessageFailures
+namespace ServiceControl.CustomChecks
 {
     using System;
     using System.Linq;
     using NServiceBus;
     using Raven.Abstractions.Data;
     using Raven.Client;
-    using ServiceControl.CustomChecks;
     using INeedInitialization = NServiceBus.INeedInitialization;
 
     public class CustomCheckNotifications : INeedInitialization, IWantToRunWhenBusStartsAndStops, IObserver<IndexChangeNotification>