ASoC: starfive: Remove some unused macros

These macros are unused and can be dropped.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230608135750.11041-3-walker.chen@starfivetech.com


Signed-off-by: Mark Brown <broonie@kernel.org>