fs: remove experimental from rmdir recursive

Refs: https://github.com/nodejs/node/issues/34278

PR-URL: https://github.com/nodejs/node/pull/35171


Reviewed-By: Christopher Hiller <boneskull@boneskull.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>