Revert of Require recipe tryjob in CQ (patchset #1 id:1 of https://codereview.chromium.org/2157503003/ )

Reason for revert:
Downstream tester messed up now, see https://crbug.com/644609

Original issue's description:
> Require recipe tryjob in CQ
>
> BUG=628801
>
> Committed: https://chromium.googlesource.com/chromium/tools/depot_tools/+/ac74456f1e697f38598cda9b1c1acedb80702c7a

TBR=phajdan.jr@chromium.org,estaab@chromium.org,iannucci@chromium.org
NOTRY=true
(no try because the tester itself is broken)
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=628801, 644609

Review-Url: https://codereview.chromium.org/2322763002