Having the same issue with the LinksAlpha button. I really can’t understand why they would wreck what was a great plugin like this.
Anyway, the easiest and most effective way I found of removing the button was to add this to the “Custom CSS” section of the Social Sharing Toolkit Settings area:
.mr_social_sharing_wrapper .linksalpha_image {
display: none !important;
display: none;
}
This removed the button, did not effect the others and can be easily done through the WordPress Dashboard.