Remove spurious sudo from apt-get.

debian/changelog

@@ -1,3 +1,9 @@
+raspi-config (20170704) stretch; urgency=medium
+
+  * Remove unnecessary sudo from apt-get
+
+ -- Simon Long <simon@raspberrypi.org>  Tue, 04 Jul 2017 10:28:55 +0100
+
 raspi-config (20170627) stretch; urgency=medium
 
   * Change configuration for GL driver - no compton, keep fbturbo, allow on Pi 1 and Pi 0

raspi-config

@@ -605,7 +605,7 @@ do_vnc() {
   fi
   if [ $RET -eq 0 ]; then
     if [ ! -d /usr/share/doc/realvnc-vnc-server ] ; then
-        sudo apt-get install realvnc-vnc-server
+        apt-get install realvnc-vnc-server
     fi
     systemctl enable vncserver-x11-serviced.service &&
     systemctl start vncserver-x11-serviced.service &&