Temporarily remove compiling against non roslyn project references

src/Microsoft.AspNet.Mvc.Razor/Compilation/RoslynCompilationService.cs

@@ -233,6 +233,8 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
                 return CreateMetadataFileReference(fileMetadataReference.Path);
             }
 
+            /*
+            TODO: Bring this back once we fix https://github.com/aspnet/dnx/issues/922
             var projectReference = metadataReference as IMetadataProjectReference;
             if (projectReference != null)
             {
@@ -243,6 +245,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
                     return MetadataReference.CreateFromImage(ms.ToArray());
                 }
             }
+            */
 
             throw new NotSupportedException();
         }