Updated mediawiki/extensions
Project: mediawiki/extensions/CodeReview  38b0e8ea7cf160c38e22fb5f61b8c6a913bfdaa2

Remove specialpages-group-developer message

The message is now part of core. This is a follow-up to I56f92ac8f6918

Change-Id: I0db5c6919da4e309f4433b9d0d49bce8bf3c6fc8