Remove old writer, use new writer, remove switch

nomad/archive/__init__.py

nomad/archive/storage.py

nomad/archive/storage_v2.py

nomad/cli/admin/springer.py

nomad/config/defaults.yaml

nomad/config/models/config.py

nomad/files.py

ops/kubernetes/nomad-prod-util.yaml

ops/kubernetes/values.yaml

tests/archive/test_archive.py

tests/archive/test_storage.py

tests/processing/test_data.py

tests/test_cli.py