Disable check_cfi and ArtServiceTests when built from prebuilts. am: 11957a6dd5

Original change: https://android-review.googlesource.com/c/platform/art/+/2760977

Change-Id: I771d9434c58db0b59d361f02ceb6f7084bfe6776
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>