Clean up repo

[matentzn]

Remove the folling files from git index:

• [ ] add-to-uberon.pl
• [ ] all remaining (non-released) subsets
• [x] assert-equivalent-classes-module.owl
• [x] composite-aba.obo
• [x] deleted_axioms.obo
• [x] disjoint_union_over.ofn
• [ ] external-disjoints.owl
• [ ] homology-relations.owl
• [ ] homology.owl
• [x] pending-disjoints-core.obo
• [ ] project.owl
• [ ] reasoner_axioms.owl
• [ ] rules.owl
• [ ] ssso-merged-uberon.owl
• [ ] uberon-simple-rel.obo
• [ ] uberon-taxmod-amniote.obo
• [ ] uberon-with-isa.obo
• [ ] uberon.references
• [ ] void.ttl
• [X] all release artefacts
• [X] basic-catalog.xml
• [X] curie_map.yaml
• [X] Makefile
• [X] [makespec.pro (moved to scripts)](https://github.com/obophenotype/uberon/blob/master/makespec.pro (moved to scripts))
• [X] ncbitaxon_import.owl
• [X] null.owl
• [X] purls.conf
• [X] [queries.pro (moved to scripts)](https://github.com/obophenotype/uberon/blob/master/queries.pro (moved to scripts))
• [X] uberon_edit-relations.tsv

[github-actions[bot]]

This issue has not seen any activity in the past 6 months; it will be closed automatically in one year from now if no action is taken.

[github-actions[bot]]

This issue has not seen any activity in the past 6 months; it will be closed automatically one year from now if no action is taken.

[anitacaron]

I updated the list by checking the files that are not present in the master branch anymore.