Revert "Write classes in runtime-generated app image." am: 24b3d648ff

Original change: https://android-review.googlesource.com/c/platform/art/+/2405064

Change-Id: I7de23fa1de8a366f88b699cd4c4f72ec62ec2839
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>