message: [metal3] Remove timestamp from event card activity
  We can't actually tell when the activity was started.
diff: @@ -79,7 +79,7 @@ const EventsCard: React.FC<EventsCardProps> = ({
  <div className="co-activity-card__ongoing-title">Ongoing</div>
  <div className="co-activity-card__ongoing-body">
  {inProgress ? (
  - <Activity timestamp={obj.status.lastUpdated}>
  + <Activity timestamp={null}>
  <ActivityItem title={hostStatus.title}>
  <ResourceLink
  kind={BareMetalHostModel.kind}
  