User blog comment:Dopp/Upcoming change: Removing the divider between the Edit button and Content/@comment-3466295-20110422005149/@comment-1656630-20110422005554

unfortunately, that falls under this point:

"A small number of wikis had used Javascript to insert extra buttons into the grey bar. In these cases, the wikis’ extra buttons will likely also disappear at the time of this change. Since these modifications were hacks on official Wikia layout elements, we can't support them at the expense of a site-wide improvement, and we're sorry for that inconvenience. "

Maybe you can replace it with a template?