CIRCLEQ_REMOVE
CIRCLEQ_REMOVE(head, bp, hq);
CIRCLEQ_REMOVE(&mp->lqh, bp, q);
CIRCLEQ_REMOVE(head, bp, hq);
CIRCLEQ_REMOVE(&mp->lqh, bp, q);
CIRCLEQ_REMOVE(&mp->lqh, mp->lqh.cqh_first, q);
CIRCLEQ_REMOVE(head, bp, hq);
CIRCLEQ_REMOVE(&mp->lqh, bp, q);