Yes it has been removed as essentially it isn't a security feature, these messages can be faked and often are in SPAM/Malicious emails to lull the user into a false sense of security.
Your inbound emails gets scanned (as do outbound emails) and if infected will give an audible and visual alert, it will also modify the email Subject, if clean you get none of that. If you check the email headers you will still see that scan information.
The only real benefit of these clean notes is on outbound email where you are in effect promoting avast.