title: ASP.NET Core Remove DNX Core 5.0
body: <p>If I have a reference to this in ASP.NET 1 core it seems to me that if this is present
  I can not have code that relies on .NET 4.6 with the DNX Core 5.0 present. I removed the reference from project.json</p>
  
  <pre><code>"frameworks": {
  "dnx451": { },
  "dnxcore50": { }
  </code></pre>
  
  <p>},</p>
  
  <p>When i did this Visual Studio locked up and I had to use Task Manager to shut it down.Is there a way to disable this reference without removing from project.json.</p>