Revert "build: run lint before tests"

This reverts commit d9f7a597.

Changes here probably need wider discussion so revert the change until
that can happen.

PR-URL: https://github.com/nodejs/node/pull/5602


Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>