Unknown or deprecated DB entities

There are three unknown or deprecated entities in jbpm repository. They should be deleted or it should be somehow resolved what they are for. There is no mention of them in DDLs or upgrade scripts or in code usage search.

In jbpm-persistence-api module:
org.jbpm.persistence.processinstance.ProcessInstanceEventInfo

In jbpm-human-task-jpa module:
org.jbpm.services.task.impl.model.CompletionBehaviorImpl
org.jbpm.services.task.impl.model.PresentationElement