VersionNT is now always greated than 600 (only needs checking in version
checking action). ISSETUPDRIVEN and ISSCHEDULEREBOOT are specific to
InstallShield and aren't relevant to LibreOffice installer.

Change-Id: I6cb769c863e09f1568ae895a6cfbb0e5940c2486
Reviewed-on: https://gerrit.libreoffice.org/46434Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>