Remove the codegen property am: 32645f219c am: 7c9335c377 am: 20666b6028

Original change: https://android-review.googlesource.com/c/platform/art/+/2558097

Change-Id: I4ff48b9ef6bec2ba6d54ca841cea13a9e7d8c1ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>