Clean up unittest_data/data/archive_blank_000.wpr after unittest finishes.
Clean up unittest_data/data/archive_blank_000.wpr after unittest finishes.

BUG=400611

Review URL: https://codereview.chromium.org/446153002

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@287990 0039d316-1c4b-4281-b951-d872f2087c98

sahiljain/catapult,catapult-project/catapult,catapult-project/catapult-csm,SummerLW/Perf-Insight-Report,sahiljain/catapult,benschmaus/catapult,benschmaus/catapult,catapult-project/catapult,catapult-project/catapult,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,SummerLW/Perf-Insight-Report,benschmaus/catapult,catapult-project/catapult,benschmaus/catapult,catapult-project/catapult-csm,catapult-project/catapult,catapult-project/catapult-csm,sahiljain/catapult,SummerLW/Perf-Insight-Report,sahiljain/catapult,sahiljain/catapult,benschmaus/catapult,catapult-project/catapult-csm,catapult-project/catapult-csm,sahiljain/catapult,catapult-project/catapult-csm,benschmaus/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult-csm,benschmaus/catapult,SummerLW/Perf-Insight-Report