How to remove Staticxx Facebook arbiter.php?

I have two instances of https://staticxx.facebook.com/connect/xd_arbiter.php?version=42 on my webpage sprybag.com. I am not using any social share plugin as such which calls this file.
How do I deregister or remove this link? If it is important file for some other page, how do I remove it only from the home page?
Also, I have http://platform.linkedin.com/in.js , http://platform.twitter.com/widgets.js?ver=4.5.1 , http://apis.google.com/js/plusone.js as seen in the page source.
How do I prevent these scripts from running on the home page, I don’t mind them running on pages that require them.
Thank You