Updated mediawiki/extensions
Project: mediawiki/extensions/LocalisationUpdate  969683d9e5671d1b67829af5cb22aa1aeca31f2f

Remove unneeded test file

This is no longer used after the LU rewrite. Also remove a reference to
the to be removed ConfEditor class in core.

Change-Id: I112c7fd396c47827999c621e0dfd7c30fd222f36