ASoC: mchp-spdifrx: remove struct mchp_spdifrx_dev::fmt member

Remove member fmt of struct mchp_spdifrx_dev as it is not used anywhere.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230130120647.638049-7-claudiu.beznea@microchip.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/atmel/mchp-spdifrx.c

@@ -235,7 +235,6 @@ struct mchp_spdifrx_dev {
 	struct regmap				*regmap;
 	struct clk				*pclk;
 	struct clk				*gclk;
-	unsigned int				fmt;
 	unsigned int				trigger_enabled;
 	unsigned int				gclk_enabled:1;
 };