remove obsolete files #30 (old k8s deploy + readme files)

ReleaseNotes_old.txt

compose/readme_old.txt

kubernetes/k8sdeploy.sh

kubernetes/k8sremove.sh

kubernetes/template/README.md

kubernetes/template/artemis.yaml

kubernetes/template/blockdiag.yaml

kubernetes/template/bugzilla.yaml

kubernetes/template/centrallog.yaml

kubernetes/template/keycloak.yaml

kubernetes/template/kroki.yaml

kubernetes/template/manoclient.yaml

kubernetes/template/mysql-config.yaml

kubernetes/template/mysql-pv-pvc.yaml

kubernetes/template/mysql.yaml

kubernetes/template/oasapi-pv-pvc.yaml

kubernetes/template/oasapi.yaml

kubernetes/template/openslice-ingress.yaml

kubernetes/template/osom-pv-pvc.yaml

kubernetes/template/osom.yaml