Hi Josh,
Unfortunately, this seems to be an error in our documentation. I've just tested this myself and am seeing the same thing you are. On closer inspection, it looks like that top-level menu is protected - likely because the login and user account links are children of that menu node (even if they don't technically display as such in the user interface).
I apologize for the confusion - I'll fix that in our documentation. It may be a holdover from earlier 1.x versions of the docs - I'm not sure.
In the meantime, the best way to fully hide this menu is likely via a custom theme, where you could use some CSS rules to hide the menu. You will want to consider the impact this will have on user login, logout, and profile options - make sure that a class you're setting not to display won't also hide the login button and its menu items, for example - or the rest of the menu items!
Regards,