Remove rtadvd(8) leftovers in etc.

OK deraadt, phessler

etc/changelist

@@ -1,4 +1,4 @@
-#	$OpenBSD: changelist,v 1.121 2018/07/13 06:56:59 florian Exp $
+#	$OpenBSD: changelist,v 1.122 2018/07/23 11:57:17 florian Exp $
 #
 # List of files which the security script backs up and checks
 # for modifications.
@@ -109,7 +109,6 @@
 /etc/resolv.conf.tail
 /etc/ripd.conf
 /etc/rpc
-/etc/rtadvd.conf
 /etc/sasyncd.conf
 /etc/sensorsd.conf
 /etc/services

etc/group

@@ -58,7 +58,6 @@ _ripd:*:88:
 _relayd:*:89:
 _ospf6d:*:90:
 _snmpd:*:91:
-_rtadvd:*:92:
 _ypldap:*:93:
 _rad:*:94:
 _smtpd:*:95:

etc/mail/aliases

@@ -1,5 +1,5 @@
 #
-#	$OpenBSD: aliases,v 1.64 2017/03/18 21:18:01 florian Exp $
+#	$OpenBSD: aliases,v 1.65 2018/07/23 11:57:17 florian Exp $
 #
 #  Aliases in this file will NOT be expanded in the header from
 #  Mail, but WILL be visible over networks or from /usr/libexec/mail.local.
@@ -54,7 +54,6 @@ _relayd: /dev/null
 _rebound: /dev/null
 _ripd: /dev/null
 _rstatd: /dev/null
-_rtadvd: /dev/null
 _rusersd: /dev/null
 _rwalld: /dev/null
 _smtpd: /dev/null

etc/master.passwd

@@ -41,7 +41,6 @@ _ripd:*:88:88::0:0:RIP Daemon:/var/empty:/sbin/nologin
 _relayd:*:89:89::0:0:Relay Daemon:/var/empty:/sbin/nologin
 _ospf6d:*:90:90::0:0:OSPF6 Daemon:/var/empty:/sbin/nologin
 _snmpd:*:91:91::0:0:SNMP Daemon:/var/empty:/sbin/nologin
-_rtadvd:*:92:92::0:0:IPv6 Router Advertisement Daemon:/var/empty:/sbin/nologin
 _ypldap:*:93:93::0:0:YP to LDAP Daemon:/var/empty:/sbin/nologin
 _rad:*:94:94::0:0:IPv6 Router Advertisement Daemon:/var/empty:/sbin/nologin
 _smtpd:*:95:95::0:0:SMTP Daemon:/var/empty:/sbin/nologin