ESXi 6.5 managed by vCenter: vpxuser account

I noticed in the HOL labs with ESXi 6.5 host that when looking in the Host Client that the vpxuser account is not showing up. I checked back in a 6.0 lab and there is the vpxuser and dcui user accounts as local accounts on the host. Am I missing something? Where are these located now or they not there anymore?

Thanks

Brian