Protected Content Site Pages: registration page


I would like to use a custom registration page but also if I have customized the page and removed all the protected content shortcodes I still get my page and, under it, the standard membership list. You can check it with the page:

I can even remove the registration page from the "Protected Content Site Pages" but there is no "no page" in the setting options. There is a way to do this or it is mandatory to use a page and I have to create a dummy one?