[v9_9] de-DLV

4749.	[func]		The ISC DLV service has been shut down, and all
			DLV records have been removed from dlv.isc.org.
			- Removed references to ISC DLV in documentation
			- Removed DLV key from bind.keys
			[RT #46155]

bin/python/dnssec-checkds.docbook

@@ -95,9 +95,6 @@
           <para>
             Check for a DLV record in the specified lookaside domain,
             instead of checking for a DS record in the zone's parent.
-            For example, to check for DLV records for "example.com"
-            in ISC's DLV zone, use:
-            <command>dnssec-checkds -l dlv.isc.org example.com</command>
           </para>
         </listitem>
       </varlistentry>