Removing 2 warnings

--HG--
branch : dev

src/Orchard/ContentManagement/Handlers/ContentItemTemplates.cs

@@ -6,7 +6,7 @@ namespace Orchard.ContentManagement.Handlers {
     public class ContentItemTemplates<TContent> : TemplateFilterBase<TContent> where TContent : class, IContent {
         private readonly string _templateName;
         // todo: (heskew) use _prefix?
-        private readonly string _prefix;
+        //private readonly string _prefix;
         private readonly string[] _displayTypes;
         private Action<UpdateEditorContext, IContent> _updater;
 

src/Orchard/InvokeExtensions.cs

@@ -42,7 +42,6 @@ namespace Orchard {
                 ex is StackOverflowException ||
                 ex is AccessViolationException ||
                 ex is AppDomainUnloadedException ||
-                ex is ExecutionEngineException ||
                 ex is ThreadAbortException ||
                 ex is SecurityException ||
                 ex is SEHException;