[Libreoffice] FATToVFat_Impl: desktop/source/app/appsys.*: windows

[Caolán McNamara]

These can be removed right ?, I mean, I don't see any use of them
anywhere or anything using appsys.hxx, so appsys.hxx and appsys.cxx
could be completely removed as far as I can see.

C.