remove the print_message command, which was only there as an example

git-svn-id: svn://bind10.isc.org/svn/bind10/trunk@1546 e5f2f494-b856-4b98-b285-d166d9295462

src/bin/auth/auth.pre.in

@@ -9,16 +9,6 @@
       }
     ],
     "commands": [
-      {
-        "command_name": "print_message",
-        "command_description": "Print the given message to stdout",
-        "command_args": [ {
-          "item_name": "message",
-          "item_type": "string",
-          "item_optional": False,
-          "item_default": ""
-        } ]
-      },
       {
         "command_name": "shutdown",
         "command_description": "Shut down authoritative DNS server",