Remove support for Win9x from wxMSW.

Most importantly, this allows us to remove all MSLU-related stuff.

Some functions which were previously loaded dynamically can now be just used
directly, too.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76535 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/choice.h

@@ -139,10 +139,6 @@ protected:
     // set the height of the visible part of the control to m_heightOwn
     void MSWUpdateVisibleHeight();
 
-    // Call GetComboBoxInfo() and return false if it's not supported by this
-    // system. Notice that the caller must initialize info.cbSize.
-    bool MSWGetComboBoxInfo(tagCOMBOBOXINFO* info) const;
-
     // create and initialize the control
     bool CreateAndInit(wxWindow *parent, wxWindowID id,
                        const wxPoint& pos,