Remove key_ops from BCC COSE_Key am: 2ba49e7a08

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

Change-Id: I7264d54bca9d8053411fbd1b1da5c324aab2a2f5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>