These strings were only used in the src and hrc file. No usecase in any .cxx file found.

Change-Id: I719520b985e55b655badf3676499d3dd9d97b363
Reviewed-on: https://gerrit.libreoffice.org/15610Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>