Adobe Acrobat DC - Removing or editing the giant menu bar

Adobe DC now shows a giant menu bar at the top, with Home / Tools / Documents / etc. This bar is annoying, because, at least by default, it takes up a huge piece of the screen, and shows Adobe ads for things I never use (like save to Adobe Cloud)

How do I hide that bar?

Removing the extra bar between the menu bar and the toolbar:

Go to Preferences - General, and uncheck the option "Open documents as new tabs in the same window (requires restart)". Restart the software and enjoy the view with no tabs on the window.

Tested with Adobe Acrobat Reader DC 2015.016.20045, which is the current latest version.

Pressing F8 hides the bar - this solves the other issues since