ASoC: hdmi-codec: remove unused ratec

struct snd_pcm_hw_constraint_list ratec is not used.
Let's remove it

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

sound/soc/codecs/hdmi-codec.c

@@ -282,7 +282,6 @@ struct hdmi_codec_priv {
 	struct hdmi_codec_daifmt daifmt[2];
 	struct mutex current_stream_lock;
 	struct snd_pcm_substream *current_stream;
-	struct snd_pcm_hw_constraint_list ratec;
 	uint8_t eld[MAX_ELD_BYTES];
 	struct snd_pcm_chmap *chmap_info;
 	unsigned int chmap_idx;