Remove a checkbox from user profile preferences

I want to remove the Email all invitees checkbox from the User Profile Advanced settings.

I know the Users module is legacy BWC, but the Meetings module isn't and contains data for this, yet uses Smarty templates.

I've been searching around but cannot seem to find any information on how to do this or override the template. I also could not find any logic for how the checkbox is displayed in the template anywhere in the SugarCRM filesystem - no variable that determines it.