java: remove dead code in qadevOOo

found by running UCDetector over the code many times, like peeling
an onion

Change-Id: I54d5147eb1b5c921ad236331bc4c1f765b13ca83
Reviewed-on: https://gerrit.libreoffice.org/13445
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>