Switch trybots to use pool:suites instead of pool:try-bot.

The try-bot pool seems to be more of a nuisance than any real
protection.  Eliminate it in favor of using the suites pool.

BUG=chromium:469926
TEST=None

Change-Id: I5ec1fe89592539a2bc18b96500ef1f974acb827a
Reviewed-on: https://chromium-review.googlesource.com/262052
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: David James <davidjames@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
1 file changed