Revert "Convert per-test run scripts to python." am: 8d6a4e021e am: 68b54df806 am: 342b2134af

Original change: https://android-review.googlesource.com/c/platform/art/+/2266307

Change-Id: I1146bb245c8ac03b66eb12e008545787e62100a1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>