[automerger skipped] cleanup - ipv6_host_id and is_dynamic_iid am: 2f45839780 am: cb0dff463a -s ours

am skip reason: Change-Id Ie3ed4583a95f15165a05412a556bae99dc07706b with SHA-1 2f45839780 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/android-clat/+/11735696

Change-Id: I14543e3ba1d4cfe8a67c61ee6f1d39d6801260e3