dnsserver.go
func (ds *DNSServer) DeleteSRV(service, protocol string) {
	ds.srvMutex.Lock()
	delete(ds.srvRecords, ds.qualifySrv(service, protocol))
	ds.srvMutex.Unlock()
}
func (ds *DNSServer) DeleteSRV(service, protocol string) {
	ds.srvMutex.Lock()
	delete(ds.srvRecords, ds.qualifySrv(service, protocol))
	ds.srvMutex.Unlock()
}
// Deletes a SRV record based on the service and protocol.