in social_bookmarks.js (which has to be activated instead of the "-mini" Version
Change:
var linkedin_code = '<script src="https://platform.linkedin.com/in.js" type="text/javascript"></script><script type="IN/Share" data-url="' + linkedin_uri + '" data-counter="right"></script>';
to:
var linkedin_code = '<script>delete IN;</script><script src="https://platform.linkedin.com/in.js" type="text/javascript"></script><script type="IN/Share" data-url="' + linkedin_uri + '" data-counter="right"></script>';