services: Remove lsh service from %DESKTOP-SERVICES.

Suggested by Mark H Weaver and others
at <http://lists.gnu.org/archive/html/guix-devel/2015-06/msg00227.html>.

* gnu/services/desktop.scm (%desktop-services): Remove call to 'lsh-service'.
* doc/guix.texi (Desktop Services): Adjust accordingly.

doc/guix.texi

@@ -5475,7 +5475,7 @@ adds or adjust services for a typical ``desktop'' setup.
 In particular, it adds a graphical login manager (@pxref{X Window,
 @code{slim-service}}), a network management tool (@pxref{Networking
 Services, @code{wicd-service}}), energy and color management services,
-an NTP client and an SSH server (@pxref{Networking Services}), the Avahi
+an NTP client (@pxref{Networking Services}), the Avahi
 daemon, and has the name service switch service configured to be able to
 use @code{nss-mdns} (@pxref{Name Service Switch, mDNS}).
 @end defvr

gnu/services/desktop.scm

@@ -23,7 +23,6 @@
   #:use-module (gnu services avahi)
   #:use-module (gnu services xorg)
   #:use-module (gnu services networking)
-  #:use-module (gnu services ssh)
   #:use-module (gnu system shadow)
   #:use-module (gnu packages glib)
   #:use-module (gnu packages admin)
@@ -286,7 +285,6 @@ site} for more information."
          (dbus-service (list avahi wicd upower colord))
 
          (ntp-service)
-         (lsh-service)
 
          (map (lambda (mservice)
                 ;; Provide an nscd ready to use nss-mdns.