How to undo the split view in VS2013?

I've downloaded the VS2013 Preview (Express, Windows Desktop if you're wondering/affects this). I've got a small issue though. I have the split view. I quite like it. Sometimes I have to get back into non-split view. However, the only way to do this as far as I know (at least in the C# code editor) is to close VS and open it again. This is pretty annoying. Is there any other way of un-splitting the view?

If you don't know what I'm talking about: How do I unsplit this?

How do I undo split editor?

Removing Split To remove split after splitting the screen into two, double-click on the vertical or horizontal split boundary. The split is then removed.

How do I split the screen in Visual Studio?

Just drag from right to left or left to right and the screen splits up vertically in two zones of the same file.

In VS2017 Window -> Remove Split. Check this out.