Worst plugin

Its not working properly. When I change something and save, the plugin doesn’t make any changes on my website. I just need only social login and I don’t need the sharing options, But I couldn’t remove or hide the sharing buttons even after deleting the plugin. The sharing icons are showing all around my website, Specially on mobile devices. Its too ugly to see like that. How should I remove all the plugin settings from my site? Deleting the changes nothing there.