Remove duplications
Several files are in the meanwhile duplicated and moved into the main simtools repositories. We remove those files here, as duplication is evil.
These are:
- reference_schemas/parameters-jsonschema.yml is now in workflows/schemas/jsonschema.yml
- the script to validate parameter scripts (scripts/validate_parameter_descriptions.py) is now a simtools application
- gitlab CI is not applicable as original schema files (e.g., Sites.yml, etc) are outdated
- don't dare yet to remove the files in ./parameters, but this files are likely to be obsolete