doc: remove Vladimir de Turckheim from Security release stewards

PR-URL: #47318
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

README.md

@@ -806,8 +806,6 @@ releases on a rotation basis as outlined in the
 * Datadog
   * [bengl](https://github.com/bengl) -
     **Bryan English** <<bryan@bryanenglish.com>> (he/him)
-  * [vdeturckheim](https://github.com/vdeturckheim) -
-    **Vladimir de Turckheim** <<vlad2t@hotmail.com>> (he/him)
 * NearForm
   * [RafaelGSS](https://github.com/RafaelGSS) -
     **Rafael Gonzaga** <<rafael.nunu@hotmail.com>> (he/him)

doc/contributing/security-release-process.md

@@ -32,7 +32,6 @@ The current security stewards are documented in the main Node.js
 | Datadog      | Bryan           |              |
 | IBM          | Joe             |              |
 | NearForm     | Rafael          |              |
-| Datadog      | Vladimir        |              |
 | NodeSource   | Juan            |              |
 | Red Hat      | Michael         |              |
 
@@ -109,7 +108,7 @@ The current security stewards are documented in the main Node.js
   For more information see: https://nodejs.org/en/blog/vulnerability/month-year-security-releases/
   ```
   (Get access from existing manager: Matteo Collina, Rodd Vagg, Michael Dawson,
-  Bryan English, Vladimir de Turckheim)
+  Bryan English)
 
 * [ ] CC `oss-security@lists.openwall.com` on pre-release