doc: delete unused definition in README.md

PR-URL: #17108
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>

README.md

@@ -593,7 +593,6 @@ Information on the current Node.js Working Groups can be found in the
 [Code of Conduct]: https://github.com/nodejs/TSC/blob/master/CODE_OF_CONDUCT.md
 [Contributing to the project]: CONTRIBUTING.md
 [Node.js Help]: https://github.com/nodejs/help
-[Node.js Moderation Policy]: https://github.com/nodejs/TSC/blob/master/Moderation-Policy.md
 [Node.js Website]: https://nodejs.org/en/
 [Questions tagged 'node.js' on StackOverflow]: https://stackoverflow.com/questions/tagged/node.js
 [#node.js channel on chat.freenode.net]: https://webchat.freenode.net?channels=node.js&uio=d4