snd_ctl_remove_id - remove the control of the given id and release it
int snd_ctl_remove_id (snd_card_t * card, snd_ctl_elem_id_t * id);
card the card instance id the control id to remove
Finds the control instance with the given id, removes it from the card list and releases it. Returns 0 if successful, or a negative error code on failure.