Remove flaky unittest.

parallel_unittest.py has failed flakily many times now and we haven't
been able to find the cause. From past experience debugging the issue,
the TestHalting test was a source of flakiness. Disable the test for
now.

I've found 59 cases in the last week where the chromite unittests flaked
and 10 cases where they flaked twice in a row so this issue definitely
needs to be fixed.

BUG=none
TEST=Run the test and confirm it still works.

Change-Id: I9924a8b34a3195b65a26ea5ebb1edb2b597d55c4
Reviewed-on: https://gerrit.chromium.org/gerrit/50240
Tested-by: David James <davidjames@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
1 file changed