staging: iio: accel: adis16240: Drop driver for this impact sensor

Whilst an interesting part, no one has done significant work on this
driver since 2019.  The recent changes are all as a result of adis library
improvements having to incorporate this device.

https://www.analog.com/en/products/adis16240.html now lists this part
as obsolete so the chances of anyone working on it are likely to be greatly
reduced.

So drop it.  We can always bring it back if anyone does have interest in
this device and is willing to invest the time to make it suitable for a
staging graduation.  How to handle the hardware triggered short bursts
of capture has never been resolved and is a somewhat challenging ABI design
problem.

Cc: Nuno Sa <[email protected]>
Cc: Rodrigo Carvalho <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jonathan Cameron <[email protected]>

Author: jic23

drivers/staging/iio/accel/Kconfig

@@ -16,16 +16,4 @@ config ADIS16203
 	  To compile this driver as a module, say M here: the module will be
 	  called adis16203.
 
-config ADIS16240
-	tristate "Analog Devices ADIS16240 Programmable Impact Sensor and Recorder"
-	depends on SPI
-	select IIO_ADIS_LIB
-	select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
-	help
-	  Say Y here to build support for Analog Devices adis16240 programmable
-	  impact Sensor and recorder.
-
-	  To compile this driver as a module, say M here: the module will be
-	  called adis16240.
-
 endmenu

drivers/staging/iio/accel/Makefile

@@ -4,4 +4,3 @@
 #
 
 obj-$(CONFIG_ADIS16203) += adis16203.o
-obj-$(CONFIG_ADIS16240) += adis16240.o