sh: pfc: Remove unused gpio_in_use member

Remove unused member gpio_in_use from struct pinmux_info.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

include/linux/sh_pfc.h

@@ -87,7 +87,6 @@ struct pinmux_info {
 	pinmux_enum_t *gpio_data;
 	unsigned int gpio_data_size;
 
-	unsigned long *gpio_in_use;
 	struct gpio_chip chip;
 };