User blog comment:Gcheung28/New sharing options on Wikia/@comment-896291-20150428100619/@comment-452-20150428100936

Hiding it is easy: display: none; } But isn't allowed by the customization policy.
 * 1) PageShareContainer {

Incidentally, the answer to your question "Do you see how obnoxious this looks?" is "Clearly not.", since the same thing is visible in the screenshot in the article itself. Had they not specifically included an image showing the edit buttons below the line, I would have assumed that it was a simple error, rather than the deliberate mistake that it is.