Usage: channelgroupdel cgid={groupID} force={1|0}

Permissions:
  b_virtualserver_channelgroup_delete

Description:
  Deletes a channel group by ID. If force is set to 1, the channel group will
  be deleted even if there are clients within.

Example:
  channelgroupdel cgid=13
  error id=0 msg=ok
