AutoConfig was used to set VE to call internal REST API endpoints exposed by the parsoid extension.
With DirectParsoidClient available, this is no longer needed.
NOTE: this causes all wikis that do not have a RESTbase backend
configured to start using DirectParsoidClient. This is true in
particular for officewiki and labswiki.
Bug: T320704
Change-Id: Ia4c6184dd75a653c3202ea160b6605335f36f6eb
