ASoC: soc-acpi: remove new_mach_data field

We never used this field (or in older SOF implementations), let's
remove it
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

include/sound/soc-acpi.h

@@ -86,7 +86,6 @@ struct snd_soc_acpi_mach_params {
  *  is not constant since this field may be updated at run-time
  * @sof_fw_filename: Sound Open Firmware file name, if enabled
  * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled
- * @new_mach_data: machine driver private data fixup
  */
 /* Descriptor for SST ASoC machine driver */
 struct snd_soc_acpi_mach {
@@ -100,7 +99,6 @@ struct snd_soc_acpi_mach {
 	struct snd_soc_acpi_mach_params mach_params;
 	const char *sof_fw_filename;
 	const char *sof_tplg_filename;
-	struct platform_device * (*new_mach_data)(void *pdata);
 };
 
 #define SND_SOC_ACPI_MAX_CODECS 3