Koji API removed by the previous commit was the last user of osbuild-koji job.
Let's remove it since nothing uses it. This also removes all of the
compatibility code in Cloud API, see concerns below:
Compatibility concerns:
- the internal deployment was moved to a completely different composer
instance, thus there are no old jobs
- Fedora deployment is still unused in prod, thus we don't care about keeping
backward compatibility of the old jobs
Signed-off-by: Ondřej Budai <ondrej@budai.cz>
e779562f3c