disable op count overhead for v2 am: 6548116177

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/3048818

Change-Id: I1e3144c7888db070fd5f73d1607e9e458f2932a2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>