daemon: remove Quagga 'vtysh' service

Since all Quagga daemons are configured from a consolidated
location (the 'zebra' service), there is nothing left to do
for a dedicated service such as 'vtysh'. This patch removes
the service, along with all references to it from the rest
of the source tree (sample *.imn files, examples, etc.)

Signed-off-by: Gabriel Somlo <glsomlo@cert.org>

daemon/examples/netns/howmanynodes.py

@@ -97,7 +97,7 @@ def main():
     parser.add_option("-s", "--services", dest = "services", type = str,
                       help = "pipe-delimited list of services added to each " \
                       "node (default = %s)\n(Example: 'zebra|OSPFv2|OSPFv3|" \
-                      "vtysh|IPForward')" % parser.defaults["services"])
+                      "IPForward')" % parser.defaults["services"])
 
     def usage(msg = None, err = 0):
         sys.stdout.write("\n")