ASoC: codec: tlv320aic32x4: Drop aic32x4_pdata usage

ASoC: codec: tlv320aic32x4: Drop aic32x4_pdata usage

There is no machine is using aic32x4_pdata as platform_data, so
remove the dead code.

Cc: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Cc: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250710-asoc-gpio-1-v2-1-2233b272a1a6@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>