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/common/file.cpp

@@ -116,10 +116,6 @@
     #define   O_BINARY    (0)
 #endif  //__UNIX__
 
-#ifdef __WINDOWS__
-    #include "wx/msw/mslu.h"
-#endif
-
 #ifdef __WXWINCE__
     #include "wx/msw/private.h"
 #endif