By removing unnecessary variables/strings/funciton calls,
and making proper changes in the related .ui files.

Change-Id: I059bf02bc6ea29bf1b92d21f5a10a76548ecd1fc
Reviewed-on: https://gerrit.libreoffice.org/25973Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>