There does not appear to be a way to change this in the UI, so I’ve hidden it with some custom CSS, which can be found and edited at Appearance->Customize->Additional CSS (all the way down at the bottom of the list of customizable sections). I’m targeting the .social-login-menu class.
The only other option seems to be to edit a template file, which isn’t a great idea, though I suppose if the theme is updated the css might not target correctly anymore, so either was it might break, but this method is easier to “fix”.
One possible drawback is that the actual code is not removed, so if you find that you’re still getting bot spam, editing the template file will be required. Here is an article on the subject: https://zemez.io/wordpress/support/how-to/create-login-form-using-cherry-popups-plugin/ (#6 talks about where/how to edit the template)