build: remove bench-* targets

PR-URL: https://github.com/nodejs/node/pull/18150
Fixes: https://github.com/nodejs/node/issues/17053


Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>