[automerger skipped] C2BqBuffer: Remove detach during migration am: e467567f -s ours

am skip reason: Merged-In I46cf14e7e71e35a5982d8073707bbbf558be9be6 with SHA-1 d42e37bf is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/17983354



Change-Id: I790cf9ae4238a76d9e56749345e4e46bea4f8469
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>