Revert the addition of 'petri.rdf'

Thread: https://mail-archives.apache.org/mod_mbox/petri-discuss/201912.mbox/%3C6398c1ac-08eb-4966-bb87-86124084e86f%40www.fastmail.com%3E
1 file changed
tree: 3946e0753b68ecf294e086e5a133cf7cbea36bee
  1. .asf.yaml
  2. .gitignore
  3. LICENSE
  4. content/
  5. pelicanconf.py
  6. theme/