Looks like there is no way around this for now without significant changes in JS code. WordPress itself does not let you have an item without link by default unless you force it via hack.
I would personally recommend you keep the link – pointed to the most important page in the dropdown menu. Or create a page which is an index to the pages linked to in the submenu items (A default about us page which links to the subitems like Team, Pricing etc. which are subitems in menu). That’s how most users handle this and we do the same for our demo site.