tools: use lint-md.js

* remove unused `tools/remark-cli`
* vcbuild tested with `vcbuild nobuild noprojgen lint-md-build lint-md`

PR-URL: https://github.com/nodejs/node/pull/20109


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>