Customization Notes
If you want Facebook to stick around, for example, you can comment it out, by placing “//” in front of it.
An alternative would be to just remove the Facebook line entirely.
// REMOVE SOCIAL LINK OPTIONS FROM THE SUBMIT FORM
add_filter("mylistinglinks-list", function ($links) {
// unset( $links['Facebook'] );
unset($links["Twitter"]);
unset($links["LinkedIn"]);
unset($links["Instagram"]);
unset($links["YouTube"]);
unset($links["Snapchat"]);
unset($links["Tumblr"]);
unset($links["Reddit"]);
unset($links["Pinterest"]);
unset($links["DeviantArt"]);
unset($links["VKontakte"]);
unset($links["SoundCloud"]);
unset($links["Website"]);
unset($links["Other"]);
return $links;
});