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

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

Change-Id: Iead4ab93e898907110b0b9bd2cb5c05f21375d1c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>