ASoC: SOF: stream-ipc: remove unnecessary MODULE_LICENSE

This file is part of the snd-sof module, there's no reason to re-add the
MODULE_LICENSE here.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://msgid.link/r/20240527194414.166156-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: plbossart

sound/soc/sof/stream-ipc.c

@@ -125,5 +125,3 @@ int sof_stream_pcm_close(struct snd_sof_dev *sdev,
 	return 0;
 }
 EXPORT_SYMBOL(sof_stream_pcm_close);
-
-MODULE_LICENSE("Dual BSD/GPL");