[altq:1878] Removing old classes

[Tiago Fioreze <tfioreze@inf.ufrgs.br>]

           How can I remove old classes and token bucket regulator through 
altqd -d?
        I have done the following:

        ariane# altqd -d
	ALTQ config file is /etc/altq.conf

	Enter ? or command:
        altqd > interface ed0 bandwidth 1000000 cbq
        tbr installed on ed0 (rate:1.00M  size:1.46K)
        altqd ed0> class cbq ed0 root_class NULL pbandwidth 100
        altqd ed0> class cbq ed0 def_class root_class pbandwidth 95
        altqd ed0> class cbq ed0 htpp_class def_class priority 2 pbandwidth 30
        altqd ed0> filter ed0 htpp_class 0 0 0 0 1
  
        I have tried to remove cbq parameters but I didn't have success. See 
below:

        altqd ed0> delete ed0 root_class
        class operation not permitted: delete_class failed
        can't delete class 'root_class' on interface 'ed0'
        Exiting.

        How can I to 'flush out' these cbq parameters?

	My gratefulness,

 	Tiago Fioreze