ASoC: wcd934x: remove unused headers

Looks like there are some unused headers, remove them.
Seems to be missed while moving to mfd.
Reported-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200306132806.19684-3-srinivas.kandagatla@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wcd934x.c

@@ -3,7 +3,6 @@
 
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
-#include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/mfd/wcd934x/registers.h>
@@ -11,10 +10,7 @@
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/of_clk.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
 #include <linux/of.h>
-#include <linux/of_irq.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>