Hide zoom/aspect ratio button in Android emulator?

How do you hide zoom/aspect ratio button thingy in the bottom-right in the Android emulator? It's blocking the view and it's really annoying. I've messed around with the emulator settings, but I can't figure out how to hide it. This is especially problematic when taking screenshots, etc.

You can toggle the zoom controls by clicking the emulator's "More" button (the three vertical dots):

That said, simply widening the emulator would push the controls to the right so they won't overlay the emulated screen anymore.

And if you are mainly concerned about screenshots, simply press the camera button , as seen in the screenshot above (or press CTRL+SHIFT+S). That makes a screenshot of the emulated screen, without any overlays that happen to obscure it.