* Update helpcontent2 from branch 'distro/collabora/cp-6.0'
  - New Help housekeeping
    
    remove deprecated files (gbuild has replaced them)
    
    Change-Id: I00a0a1558dfa80486dd64df37273c90bc6262fb0
    Reviewed-on: https://gerrit.libreoffice.org/58784
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    Reviewed-on: https://gerrit.libreoffice.org/58794Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jan Holesovsky <kendy@collabora.com>