Deleting the Developer's tab

I really like this plugin, but how do I get ride of the small tab for “Envato” that appears at the bottom of the screen?

Every time I un-check “plugin developer” at the bottom of the facebook edit page and then hit “save settings” it re-checks the box. I don’t want the developer to appear on my webpage. Sorry!

https://www.ads-software.com/plugins/social-networks-facebooktwittergoogle/