Add RFC to remove non-standard Github teams

Authored-by: Greg Cobb <[email protected]>

toc/rfc/rfc-draft-remove-nonstandard-github-teams.md

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+# Meta
+[meta]: #meta
+- Name: Remove Non-Standard Github Teams
+- Start Date: 2022-04-28
+- Author(s): @gerg
+- Status: Draft <!-- Acceptable values: Draft, Approved, On Hold, Superseded -->
+- RFC Pull Request: (fill in with PR link after you submit it)
+
+
+## Summary
+
+Remove Github teams (and associated access) that are outside of the CFF
+governance model.
+
+## Problem
+
+There are currently many Github teams in the `cloudfoundry` Github organization
+that do not correlate with a CFF-recognized entity (working group, TOC, etc).
+These teams grant access to CFF-governed repositories, but are not beholden to
+the CFF's roles and other processes for governing access. In addition, the
+volume of Github teams makes it more difficult to manage team access via the
+Github UI and intermediary tools like
+[`cloudfoundry.yml`](https://github.com/cloudfoundry/community/blob/main/org/cloudfoundry.yml).
+
+## Proposal
+
+Delete all Github teams in the `cloudfoundry` organization that do not conform
+to
+[rfc-0005-github-teams-and-access](https://github.com/cloudfoundry/community/blob/main/toc/rfc/rfc-0005-github-teams-and-access.md)
+or another CFF-recognized entity (for example: the
+[`toc`](https://github.com/orgs/cloudfoundry/teams/toc) team).