fdo#72598 Remove SunStudio cruft from code base

Change-Id: Ia6799c852eb95d496fbc8dcfdabde62dffc263a6
Reviewed-on: https://gerrit.libreoffice.org/7066
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>