Updated mediawiki/extensions
Project: mediawiki/extensions/SemanticMediaWiki  fddc7ab392ea546c9a22e42a54b1857a02f809fd

Remove SMWSQLStore2

The old storage backend was replaced by SMWSQLStore3.
This change enables other simplifications and improvements elsewhere;
they will be done in separate commits.

Change-Id: I0341d13bf553b6091892b11880791a6d8e289527