We no longer use instrumentation stubs remove the support code am: e52e4fb74e am: fbed55acb2 am: 2de1f411e8

Original change: https://android-review.googlesource.com/c/platform/art/+/2363299

Change-Id: Ia8f362c0891c0f40f533c66d724a0476e7629e84
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>