Remove settings for old ArmNN HIDL backend am: 185f372529

Original change: https://googleplex-android-review.googlesource.com/c/device/google/gs101/+/24059469

Change-Id: Ib3084ef736be563eb2d2feb591ee390f9418a666
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>