wxUniv build was broken since the base class of wxStatusBar was changed from
wxWindow to wxControl in r66226 because it derived twice from wxInputConsumer
now.
Fix this by simply not inheriting wxStatusBarUniv from wxInputConsumer any
more, it already derives from it via wxControl now.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66239 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775