[REF] logging: removed pseudo log-level TEST.

When --test-enable is used, it is expected that test output is visible,
thus using log-level INFO is natural.

On the down side you lose the nice blue hint that tests did actually
run when --log-level test was given.

bzr revid: vmt@openerp.com-20130326155844-83e2tcqokvblr0ln