To fix the jobs on the docker runners for the CI, I added [this line](https://gitlab.idiap.ch/bob/bob.bio.face/-/blob/d6d8e20bb73cfe4b099fedee603fad6498203d7f/src/bob/bio/face/embeddings/pytorch.py#L27) a while back. We should: - [x] remove this line as this limits *any* work to a single thread and is not really wanted for performance reasons. - [x] add `OMP_NUM_THREADS=1` as a variable in the CI config, either on the `.gitlab-ci.yaml` (in `bob/dev-profile`) (if possible, only for the jobs running on docker) or in the runner configuration (if possible?).