Empty out the obsolete BVT suites.

Suites 'bvt', 'bvt_cq', and 'qav' are now obsolete.  This removes
all tests from the suites.

BUG=chromium:399089
TEST=ran suite_enumerator on bvt, bvt_cq and qav

Change-Id: Iadb295beb2c1b67d58dede970a20760b7694c2eb
Reviewed-on: https://chromium-review.googlesource.com/223171
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Fang Deng <fdeng@chromium.org>
90 files changed