Revert "run-test: Convert from bash to python." am: d08df34417 am: 92a5df7188

Original change: https://android-review.googlesource.com/c/platform/art/+/2241654

Change-Id: I20696651eb749bbf9c7d691827c50cf5cd5fd7c3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>