Revert of Require internal recipe tryjob (patchset #1 id:1 of https://codereview.chromium.org/2187073004/ )

Reason for revert:
Waiting until can land all 3 next week.

Original issue's description:
> Require internal recipe tryjob
>
> BUG=628801
>
> Committed: https://chromium.googlesource.com/chromium/tools/depot_tools/+/1dae95a13f123a16bc1d03bd2c587e770ce2e29f

TBR=estaab@chromium.org,nodir@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=628801

Review-Url: https://codereview.chromium.org/2238403002