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

src/generic/helpext.cpp

@@ -38,10 +38,6 @@
     #include   <unistd.h>
 #endif
 
-#ifdef __WINDOWS__
-#include "wx/msw/mslu.h"
-#endif
-
 #ifdef __WXMSW__
 #include <windows.h>
 #include "wx/msw/winundef.h"