Replace deprecated ContentHandler::makeParserOptions()

Having a different ParserOptions for each content model isn't feasible
in an MCR world. And the only thing using this was Wikibase, which has
been fixed to do what it needs in a different way.

Bug: T194263
Change-Id: Ia95f3e2c1ea944366ff9a478c3c86f8565023394
Depends-On: I01373b29ee25fa9346c6b0317155be4ccdc8c515