Remove _switchd user/group/alias

ok millert deraadt

switchd(8) was removed back in November. Commit message was:

Retire switchd and switchctl. While interesting they never managed to
really get into a usable state. The OpenFlow API is mostly superseeded
by P4 and so this is a bit of a dead end.

etc/group

@@ -22,7 +22,6 @@ _sshagnt:*:34:
 _x11:*:35:
 utmp:*:45:
 _unwind:*:48:
-_switchd:*:49:
 _traceroute:*:50:
 _ping:*:51:
 _unbound:*:53:

etc/mail/aliases

@@ -1,5 +1,5 @@
 #
-#	$OpenBSD: aliases,v 1.68 2020/01/24 06:17:37 tedu Exp $
+#	$OpenBSD: aliases,v 1.69 2022/04/21 20:48:50 danj 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.
@@ -61,7 +61,6 @@ _smtpq: /dev/null
 _sndio: /dev/null
 _snmpd: /dev/null
 _spamd: /dev/null
-_switchd: /dev/null
 _syslogd: /dev/null
 _tcpdump: /dev/null
 _traceroute: /dev/null

etc/master.passwd

@@ -11,7 +11,6 @@ _rusersd:*:32:32::0:0:rpc.rusersd:/var/empty:/sbin/nologin
 _fingerd:*:33:33::0:0:fingerd:/var/empty:/sbin/nologin
 _x11:*:35:35::0:0:X Server:/var/empty:/sbin/nologin
 _unwind:*:48:48::0:0:Unwind Daemon:/var/empty:/sbin/nologin
-_switchd:*:49:49::0:0:Switch Daemon:/var/empty:/sbin/nologin
 _traceroute:*:50:50::0:0:traceroute privdrop user:/var/empty:/sbin/nologin
 _ping:*:51:51::0:0:ping privdrop user:/var/empty:/sbin/nologin
 _unbound:*:53:53:unbound:0:0:Unbound Daemon:/var/unbound:/sbin/nologin