Input: adp5589: remove the driver

The adp5589 support is based on legacy platform data and there's no
upstream platform using this device.
Moreover, recently, with

commit
480a8ad683 ("mfd: adp5585: Add Analog Devices ADP5585 core support")

we overlapped support for the adp5585 device (gpiochip part of it) but
since it actually makes sense for the device to be supported under MFD, we
can complement it and add the keymap support for it (properly based on FW
properties). And that is what

commit
04840c5363a6 ("Input: adp5585: Add Analog Devices ADP5585/89 support")

is doing.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250701-dev-adp5589-fw-v7-17-b1fcfe9e9826@analog.com
Signed-off-by: Lee Jones <lee@kernel.org>

drivers/input/keyboard/Kconfig

@@ -61,16 +61,6 @@ config KEYBOARD_ADP5588
 	  To compile this driver as a module, choose M here: the
 	  module will be called adp5588-keys.
 
-config KEYBOARD_ADP5589
-	tristate "ADP5585/ADP5589 I2C QWERTY Keypad and IO Expander"
-	depends on I2C
-	help
-	  Say Y here if you want to use a ADP5585/ADP5589 attached to your
-	  system I2C bus.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called adp5589-keys.
-
 config KEYBOARD_AMIGA
 	tristate "Amiga keyboard"
 	depends on AMIGA

drivers/input/keyboard/Makefile

@@ -9,7 +9,6 @@ obj-$(CONFIG_KEYBOARD_ADC)		+= adc-keys.o
 obj-$(CONFIG_KEYBOARD_ADP5520)		+= adp5520-keys.o
 obj-$(CONFIG_KEYBOARD_ADP5585)		+= adp5585-keys.o
 obj-$(CONFIG_KEYBOARD_ADP5588)		+= adp5588-keys.o
-obj-$(CONFIG_KEYBOARD_ADP5589)		+= adp5589-keys.o
 obj-$(CONFIG_KEYBOARD_AMIGA)		+= amikbd.o
 obj-$(CONFIG_KEYBOARD_APPLESPI)		+= applespi.o
 obj-$(CONFIG_KEYBOARD_ATARI)		+= atakbd.o