cleanup the folders chart2/ and ucb/

Change-Id: Ia5f230703e55da5710eaa52bbd9e22a6395a49ad
Reviewed-on: https://gerrit.libreoffice.org/15832Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>