ASoC: soc-core: remove duplicate snd_soc_flush_all_delayed_work()

snd_soc_unbind_card() calls snd_soc_flush_all_delayed_work() (A),
but it will be called in soc_cleanup_card_resources() (B).
It is duplicated, let's remove it.

(B) static void soc_cleanup_card_resources(...)
{
...
/* flush delayed work before removing DAIs and DAPM widgets */
(A)' snd_soc_flush_all_delayed_work(card);
...
}

static void snd_soc_unbind_card(...)
{
if (snd_soc_card_is_instantiated(card)) {
card->instantiated = false;

(A) snd_soc_flush_all_delayed_work(card);
(B) soc_cleanup_card_resources(card);
}
}

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87h5pwdc3z.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>