Updated mediawiki/extensions
Project: mediawiki/extensions/Flow  2437581d2077bc21d2bfbb85bc7351fc0ac0a1a2

Remove undocumented css

Not clear from logs or css what purpose it solves. Let's remove it
and react if it breaks anything.

Bug: 67833
Change-Id: Ic4849d424e6ac9a152184d25c032d677befedb13