That menu item is coming from WooCommerce rather than WooCommerce Tickets. However, you should be able to customize your menus by heading to Appearance > Menus and editing the menus from there.
Shoot, that’s not good! This question may be more suitable for WooCommerce support, but I did find this support thread from another site that offered a solution.
Another way might be to use CSS to hide the menu item altogether, though I would want to avoid that if there is some easier and more maintainable way that the WooCommerce support team knows about.