def remove_subscription(subscription)
      errors = remove_subscriptions [subscription]

      raise errors.first if errors.first
    end
def remove_subscription(subscription)
      errors = remove_subscriptions [subscription]

      raise errors.first if errors.first
    end
Stops the specified subscription and removes it from this session. If an error occurs then a {LightstreamerError}
 subclass will be raised. To just stop a subscription with the option of restarting it at a later date call
 {Subscription#stop} on the subscription itself.

 @param [Subscription] subscription The subscription to stop and remove from this session.