install/54990: After upgrade from 9.0-RC2 to 9.0, the release candidate is still present

[rares.aioanei%gmail.com@localhost]

>Number:         54990
>Category:       install
>Synopsis:       After upgrade from 9.0-RC2 to 9.0, the release candidate is still present
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 20 11:50:00 +0000 2020
>Originator:     Rares Aioanei
>Release:        9.0
>Organization:
>Environment:
NetBSD localhost 9.0 NetBSD 9.0 (GENERIC) #0: Fri Feb 14 00:06:28 UTC 2020  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64

>Description:
I just upgraded NetBSD 9.0-RC2 to 9.0 via iso. The release went fine, but when I log in, I'm still greeted by the message that warns me that this is a RC, bugs may be encountered, etc. 
>How-To-Repeat:

>Fix: