ASoC: Intel: avs: Drop superfluous stream decoupling

HDAudio streams are decoupled on startup() and, decoupling them again on
prepare() is redundant.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Link: https://lore.kernel.org/r/20230929112436.787058-7-amadeuszx.slawinski@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/avs/pcm.c

@@ -350,7 +350,6 @@ static int avs_dai_hda_be_prepare(struct snd_pcm_substream *substream, struct sn
 	format_val = snd_hdac_calc_stream_format(runtime->rate, runtime->channels, runtime->format,
 						 runtime->sample_bits, 0);
 
-	snd_hdac_ext_stream_decouple(bus, link_stream, true);
 	snd_hdac_ext_stream_reset(link_stream);
 	snd_hdac_ext_stream_setup(link_stream, format_val);
 
@@ -615,7 +614,6 @@ static int avs_dai_fe_prepare(struct snd_pcm_substream *substream, struct snd_so
 		return 0;
 
 	bus = hdac_stream(host_stream)->bus;
-	snd_hdac_ext_stream_decouple(bus, data->host_stream, true);
 	snd_hdac_stream_reset(hdac_stream(host_stream));
 
 	format_val = snd_hdac_calc_stream_format(runtime->rate, runtime->channels, runtime->format,