Post ODK Migration Clean up

[matentzn]

Figure out what to do with these, I think they are not used at all:

• [ ] https://github.com/oborel/obo-relations/blob/master/bfo-classes-minimal.owl
• [ ] https://github.com/oborel/obo-relations/blob/master/bfo-axioms.owl
• [ ] https://github.com/oborel/obo-relations/blob/master/CHANGES.md
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/CHANGES
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/README.txt
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/omo_import.owl
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/other_import.ofn
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/cut-release.sh
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/ro-diff.html
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/ro-diff.md
• [ ] https://github.com/oborel/obo-relations/blob/master/src/ontology/ro_bfo_1_2_bridge.owl (careful)