doc: remove some news issues that are no longer

Signed-off-by: Michael Dawson <[email protected]>
PR-URL: #53608
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Rafael Gonzaga <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Marco Ippolito <[email protected]>
Reviewed-By: Moshe Atlow <[email protected]>
Reviewed-By: Chengzhong Wu <[email protected]>

Author: mhdawson

doc/contributing/sharing-project-news.md

@@ -27,10 +27,8 @@ that promotes a specific company or commercial interest.
 
 ## Teams doing updates
 
-* [Node.js core](https://github.com/orgs/nodejs/discussions/47703).
 * [node-api/node-addon-api](https://github.com/nodejs/abi-stable-node/issues/459).
 * [uvwasi](https://github.com/nodejs/uvwasi/issues/201).
-* [security-team](https://github.com/nodejs/security-wg/issues/1006).
 * [Website team](https://github.com/nodejs/nodejs.org/issues/5602).
 * [diagnostics team](https://github.com/nodejs/diagnostics/issues/619).
 * [ambassadors](https://github.com/nodejs/nodejs-ambassadors/issues/2).