The following command deletes the addedfqdn.com FQDN.

Situation before delete: 

<?xml version="1.0" encoding="ISO-8859-1"?>
<Response stat="200" code="ok">
<Success><Data><fqdn><FullyQualifiedDomainName>addedfqdn.com.</FullyQualifiedDomainName>
<SelectionCriteria>rr</SelectionCriteria>
<FailTime>0</FailTime>
<SiteRecoveryMode>auto</SiteRecoveryMode>
<Mapping>0</Mapping>
<failover>N</failover>
</fqdn></Data>
</Success>
</Response>
curl -k "https://bal:1fourall@20.200.25.100/access/delfqdn?fqdn=addedfqdn.com"

Response: 

<Response stat="200" code="ok">
<Success>Deleted FQDN addedfqdn.com.</Success>
</Response>

Situation after delete: 

<?xml version="1.0" encoding="ISO-8859-1"?>
<Response stat="404" code="fail">
<Error>No geo data found</Error>
</Response>