methods have been removed, the variant is now part of the $query argument.
* Removed Title::isValidCssJsSubpage(), deprecated since 1.17 in favor of
using Title::isCssJsSubpage() or checking Title::isWrongCaseCssJsPage().
-* (bug 24430) Remove number of column for edit field in preference page.
* Support for the deprecated hook MagicWordMagicWords was removed.
* The Xml::namespaceSelector method has been deprecated, please use
Html::namespaceSelector instead (note that the parameters have changed also).