Revert "test: test.py add option to use node in path"

This reverts commit 4198253a.

PR-URL: https://github.com/nodejs/node/pull/10613



Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>