Fixes #65 Duplicate asp.net mvc exceptions

Author: niemyjski

Source/Platforms/Mvc/ExceptionlessModule.cs

@@ -4,15 +4,13 @@
 using System.Web.Mvc;
 using Exceptionless.Dependency;
 using Exceptionless.Web;
-using Exceptionless.Web.Extensions;
 
 namespace Exceptionless.Mvc {
     public class ExceptionlessModule : IHttpModule {
         private HttpApplication _app;
 
         public virtual void Init(HttpApplication app) {
             ExceptionlessClient.Default.Startup();
-            ExceptionlessClient.Default.RegisterHttpApplicationErrorHandler(app);
             ExceptionlessClient.Default.Configuration.AddPlugin<ExceptionlessWebPlugin>();
             ExceptionlessClient.Default.Configuration.Resolver.Register<ILastReferenceIdManager, WebLastReferenceIdManager>();
 
@@ -24,7 +22,6 @@ public virtual void Init(HttpApplication app) {
 
         public void Dispose() {
             ExceptionlessClient.Default.Shutdown();
-            ExceptionlessClient.Default.UnregisterHttpApplicationErrorExceptionHandler(_app);
         }
     }
 }