Switching from Code Generation -> No code generation leaves an empty Update in the project file

In the new project system the file remains on disk, and due to the globs is part of the project:

1. File -> New Console App (.NET Core)
2. Right-click project, choose Add -> New Item
3. Choose Resources file
4. Click OK
5. In the designer, change Access modifier from "internal" to "no code generation"

Expected:
``` XML

Exe
netcoreapp1.0

```

Actual:
``` XML

Exe
netcoreapp1.0

```