java: remove more test skeleton code

Change-Id: I37a82554de4f77be7e0fb3e42245a70b53beb83c
Reviewed-on: https://gerrit.libreoffice.org/13476
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>