mfd: iqs62x: Remove unused bit mask

The register write that performed a mandatory soft reset during
probe was removed during development of the driver, however the
IQS62X_SYS_SETTINGS_SOFT_RESET bit mask was left behind. Remove
it to keep stray macros out of the driver.

Signed-off-by: Jeff LaBundy <jeff@labundy.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Author: jlabundy

drivers/mfd/iqs62x.c

@@ -57,7 +57,6 @@
 #define IQS620_TEMP_CAL_OFFS			0xC4
 
 #define IQS62X_SYS_SETTINGS			0xD0
-#define IQS62X_SYS_SETTINGS_SOFT_RESET		BIT(7)
 #define IQS62X_SYS_SETTINGS_ACK_RESET		BIT(6)
 #define IQS62X_SYS_SETTINGS_EVENT_MODE		BIT(5)
 #define IQS62X_SYS_SETTINGS_CLK_DIV		BIT(4)