module: subpath folder mappings EOL

PR-URL: https://github.com/nodejs/node/pull/40121


Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>