PEP 770: Remove mechanism for statically defining SBOM files

[sethmlarson]

• Change is either:
  • To a Draft PEP
  • To an Accepted or Final PEP, with Steering Council approval
  • To fix an editorial issue (markup, typo, link, header, etc)
• PR title prefixed with PEP number (e.g. PEP 123: Summary of changes)

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📚 Documentation preview 📚: https://pep-previews--4321.org.readthedocs.build/

[brettcannon]

I think the dropping of the file table isn't an open issue.

[sethmlarson]

Thanks for the review @brettcannon, your comments are resolved in cc3373d