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/filedlgg.cpp

@@ -70,10 +70,6 @@
     #endif
 #endif
 
-#ifdef __WINDOWS__
-    #include "wx/msw/mslu.h"
-#endif
-
 #ifdef __WATCOMC__
     #include <direct.h>
 #endif