Input: adp5589: remove the driver

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
480a8ad683d7 ("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>