Remove key_ops from BCC COSE_Key am: 2ba49e7a08 am: 58fb4c1244 am: 15ee31eee0 am: 1a4008144c

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/2220181

Change-Id: I6699cae6e375b95984b88e7393a4aaa1f7fd93ea
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>