sh4: Drop unused twl6030 driver

This is not used. Drop the driver and Kconfig option.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index 14c0ea7..71f315a 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -14,5 +14,4 @@
 obj-$(CONFIG_I8042_KEYB) += i8042.o
 obj-$(CONFIG_TEGRA_KEYBOARD) += input.o tegra-kbc.o
 obj-$(CONFIG_TWL4030_INPUT) += twl4030.o
-obj-$(CONFIG_TWL6030_INPUT) += twl6030.o
 endif
diff --git a/drivers/input/twl6030.c b/drivers/input/twl6030.c
deleted file mode 100644
index 76bd348..0000000
--- a/drivers/input/twl6030.c
+++ /dev/null
@@ -1,47 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * TWL6030 input
- *
- * Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
- */
-
-#include <twl6030.h>
-
-int twl6030_input_power_button(void)
-{
-	u8 value;
-
-	twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_STS_HW_CONDITIONS, &value);
-
-	/* Power button is active low. */
-	if (value & TWL6030_STS_HW_CONDITIONS_PWRON)
-		return 0;
-
-	return 1;
-}
-
-int twl6030_input_charger(void)
-{
-	u8 value;
-
-	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
-		&value);
-
-	if (value & TWL6030_CONTROLLER_STAT1_VAC_DET)
-		return 1;
-
-	return 0;
-}
-
-int twl6030_input_usb(void)
-{
-	u8 value;
-
-	twl6030_i2c_read_u8(TWL6030_CHIP_CHARGER, TWL6030_CONTROLLER_STAT1,
-		&value);
-
-	if (value & TWL6030_CONTROLLER_STAT1_VBUS_DET)
-		return 1;
-
-	return 0;
-}