Don't include boot IDs in the TestFail messages

Auto-bug-filing system uses the TestFail message as an anchor text
to group bugs. But the boot IDs change on different boots. Including
the boot ID in the TestFail message results filing a lot of the
same bugs. Change to not include it.

BUG=chromium:443923
TEST=Ran display_HotPlugAtSuspend and display_HotPlugAtBoot.

Change-Id: Ic2df17dfecd817579438eaad44a7288704b481ca
Reviewed-on: https://chromium-review.googlesource.com/238540
Tested-by: Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Queue: Wai-Hong Tam <waihong@chromium.org>
1 file changed