ASoC: trace: remove snd_soc_codec

snd_soc_codec is replaced to snd_soc_component,
and it is not used in this file.
Let's remove it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>