BucketAdvisor getParentAdvisor(BucketAdvisor advisor) {
    BucketAdvisor parent = advisor.getParentAdvisor();
    while (parent != null) {
      advisor = parent;
      parent = advisor.getParentAdvisor();
    }
    return advisor;

  }
Overriding this method from AbstractBucketRegionQueue in order to remove the event from
eventSeqNumQueue if EntryNotFoundException is encountered during basicDestroy. This change is
done during selective merge from r41425 from gemfire701X_maint.
geode-core/src/main/java/org/apache/geode/internal/cache/BucketRegionQueue.java