Stop using peribolos for managing org membership (#226)

* Remove github action to apply org membership

We are no longer going to use Peribolos to manage permissions in the ODH
org. Removing the action for applying membership so that changes don't
get applied.

* Stop using peribolos for managing org membership

We've agreed at an ODH leadership level that we no longer want to use
Peribolos for managing membership in the ODH org. This change removes
the peribolos-specific contents of this repository and updates the
README accordingly.

README.md

@@ -1,38 +1,17 @@
 # opendatahub-io GitHub organization
 
-This repository contains the metadata [configuration](/config) for the opendatahub-io Github
-Organizations. The data here is consumed by the
-[peribolos](https://docs.prow.k8s.io/docs/components/cli-tools/peribolos/)
-tool to organization and team membership, as well as team creation and deletion.
+This repository is no longer used to manage organization membership. Reach out to another
+member of the OpenDataHub organization if you need to be added. If you do not know any
+members of the OpenDataHub organization, membership in the opendatahub-io organization can be made by opening an [issue](https://github.com/opendatahub-io/org-management/issues/new/choose).
 
 Membership in the opendatahub-io project is governed by our
 [community guidelines](https://github.com/opendatahub-io/opendatahub-community/blob/main/community-membership.md).
 
-NOTE: The opendatahub-io organization and team membership list will be managed by this repo only.  Any differences between the actual opendatahub-io organzation membership and the [org.yaml](config/opendatahub-io/org.yaml) may result in a loss of org or team membership settings with the peribolos command is executed 
-
-The application for membership in the opendatahub-io organization can be made by opening an [issue](https://github.com/opendatahub-io/org-management/issues/new/choose).
-However, if you are already part of the opendatahub-io organization, you do not need to do this and can add yourself directly to the appropriate files.
-For example, to also add yourself to the opendatahub-io organization, you can navigate to `config/opendatahub-io/org.yaml` and add your GitHub username to the list of members (in alphabetical order)
-
-Requirements
-
-* Add only one new member per commit (if you add two members separate it in two commits
-* Commit message format `Add <USERNAME> to <opendatahub-io, mlops-sig, ...> org`. 
-
-* New GitHub team requests can only come from an existing opendatahub-io member who will function as the maintainer of the team. Each additional member will follow the same requirements for adding new members
-* Commit message format `Create <TEAMNAME>`
-
 ## Community, discussion, contribution, and support
 
 Learn how to engage with the opendatahub-io community on the
 [community page](http://github.com/opendatahub-io/opendatahub-community/).
 
-You can reach the maintainers of this project at:
-
-- [#sig-platform](https://odh-io.slack.com/messages/sig-platform) on slack
-
-To report any sensitive information, please email the private github@kubernetes.io list.
-
 ### Code of conduct
 
 Participation in the Open Data Hub community is governed by the