Revert "Write classes in runtime-generated app image." am: 24b3d648ff am: e1256b5060

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

Change-Id: I8a3b8a248383bd641db0c6eabd633eaa7b35c49a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>