No longer auto-start pkgsrc packages

In order to comply with the pkgsrc standards, pkgsrc packages are no
longer auto-started.  Instead, we require that users follow the common
pkgsrc procedure: to start a pkgsrc package as part of system startup,
copy its startup script from /usr/pkg/etc/rc.d to /etc/rc.d, and make
the appropriate changes to /etc/rc.conf.

This change affects in particular the openssh package, of which its
ssh daemon is no longer auto-started.  However, installing this
package also no longer causes all kinds of Kerberos-related warnings
to be reported at boot time now.

Also remove a leftover reference to the defunct ddekit usb package.

Change-Id: I4d42f6ca1ab5e3bc2ec296bc7c0e3056964ae451

etc/rc.minix

@@ -214,15 +214,6 @@ stop)
 	# RS: devman not running?
 	sleep 1
     fi
-    #
-    # usbd needs to be stopped exactly
-    # at this stage(before stopping devman
-    # and after stopping the services
-    # stated by devmand)
-    if [ -x /usr/pkg/etc/rc.d/usbd ]
-    then
-	/usr/pkg/etc/rc.d/usbd stop
-    fi
 
     if [ -x /service/usbd ]
     then

etc/usr/rc

@@ -417,26 +417,3 @@ stop)
 	  fi
 	fi
 esac
-
-# Let packages run their own scripts
-# FIXME: this should be removed altogether: pkgsrc is not supposed to be used
-# this way.  Instead, the user should copy over scripts from /usr/pkg/etc/rc.d
-# to /etc/rc.d as desired, and configure them in /etc/rc.conf as appropriate.
-for d in /usr/local/etc/rc.d /usr/pkg/etc/rc.d
-do
-if [ -d "$d" -a -z "$bootcd" ]
-then	( if cd $d
-	then
-		echo -n "Local packages ($action): "
-		for f in *
-		do
-			if [ -x "$f" ]
-			then	echo -n "$f "
-				sh "$f" "$action"
-			fi
-		done
-		echo " done."
-	fi
-	)
-fi
-done