My debug build is slow enough already, no need to make it worse.
People who want it, can turn it on explicitly.
Change-Id: I8677534d8f0142699baa6b95a249ae5f70c5cc3c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/170269
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
