ASoC: samsung: s3c24xx-i2s: Drop unneeded gpio.h include

The module does not use anything from gpio.h header.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220627143412.477226-2-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/samsung/s3c24xx-i2s.c

@@ -12,7 +12,6 @@
 #include <linux/delay.h>
 #include <linux/clk.h>
 #include <linux/io.h>
-#include <linux/gpio.h>
 #include <linux/module.h>
 
 #include <sound/soc.h>