Updated mediawiki/extensions/Wikidata
Project: mediawiki/extensions/Wikibase  b85e7ca09fac0535ac704d064111528c586ca29c

Deleted obsolete README

resources/wikibase.libs/ is not used by any component and the directory is not supposed to be
part of the current JS architecture.

Change-Id: Ib3ef1f7ca117d5317fba63ae3bdda4593a399f66