Revert "[autotest] Don't schedule HWTests if less than 4 duts in the pool is available."

This reverts commit 0f535da8cb3580a5dd5f30433f94cf61317b03e8.

Change-Id: Idf1b2d738ecdc7bb6c7907ce60e74a222667f79f
Reviewed-on: https://chromium-review.googlesource.com/201120
Commit-Queue: Dan Shi <dshi@chromium.org>
Tested-by: Dan Shi <dshi@chromium.org>
Reviewed-by: Simran Basi <sbasi@chromium.org>
4 files changed