API for hiding the open button

[sagikazarmark]

I use decktape to print slides and it doesn't use any of the print styles when printing. As a result, the menu button (when enabled) shows up on the printed slides.

It would be nice if there was an API for hiding the menu button.

Sadly, the RevealJS plugin API does not provide any solution for changing configuration (unlike for builtin features), so only a custom solution works here.