include/shared/lk: Cleanup metric list am: fede2fe8af

Original change: https://android-review.googlesource.com/c/trusty/lk/trusty/+/3165856

Change-Id: I21506705146c34badc444b5663b3250a7a97ef13
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>