The one in tools/solar.h is the only one needed.

Change-Id: I7a4e041694fb61329d16f300be4f986eb8d4ec48
Reviewed-on: https://gerrit.libreoffice.org/54202Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>