Updated mediawiki/extensions
Project: mediawiki/extensions/BookManagerv2  b2ac1d16fe987bb29a8bc3939dd2fbeb11159906

Remove extraneous CSS

List-related CSS in the primary CSS file is being overridden in
the JavaScript CSS file, so it is not needed.

Change-Id: I02d56a1182c3e5c95e15410d5a504be88c045bbd