pinctrl: uniphier: remove unneeded pin group nand_cs1

This SoC does not support NAND CS1.  This place-holder is no longer
necessary.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

drivers/pinctrl/uniphier/pinctrl-uniphier-ld20.c

@@ -25,8 +25,6 @@ static const unsigned nand_pins[] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
 				     15, 16, 17};
 static const unsigned nand_muxvals[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 					0, 0, 0};
-static const unsigned nand_cs1_pins[] = {};
-static const unsigned nand_cs1_muxvals[] = {};
 static const unsigned sd_pins[] = {10, 11, 12, 13, 14, 15, 16, 17};
 static const unsigned sd_muxvals[] = {3, 3, 3, 3, 3, 3, 3, 3};  /* No SDVOLC */
 static const unsigned uart0_pins[] = {54, 55};
@@ -54,7 +52,6 @@ static const struct uniphier_pinctrl_group uniphier_ld20_groups[] = {
 	UNIPHIER_PINCTRL_GROUP(i2c3),
 	UNIPHIER_PINCTRL_GROUP(i2c4),
 	UNIPHIER_PINCTRL_GROUP(nand),
-	UNIPHIER_PINCTRL_GROUP(nand_cs1),
 	UNIPHIER_PINCTRL_GROUP(sd),	/* SD does not exist for LD11 */
 	UNIPHIER_PINCTRL_GROUP(uart0),
 	UNIPHIER_PINCTRL_GROUP(uart1),