Move remaining ARK/ELN baselines to kernel-ark .gitlab-ci.yml
Currently, ARK/ELN kernels have all the usual baselines configured in kernel-ark.
The baseline trigger in pipeline-data still contains pipelines related to building ark/eln with clang. Having a third place to configure ark/eln testing (next to the Koji/Brew trigger and kernel-ark .gitlab-ci.yml) is confusing and doesn't provide additional value.
AC:
- move remaining baselines into kernel-ark .gitlab-ci.yml
pipeline-data: https://gitlab.com/cki-project/pipeline-data/-/blob/main/baseline.yaml#L26