staging: iio: cdc: ad7152: remove driver completely

The AD7153 part has been obsoleted for some time. The AD7152 part will be
obsolete in the coming future.
Moving it out of staging doesn't make sense anymore. Which makes the driver
enter a limbo state.

This patch removes the driver completely, so that no effort is placed on
it, allowing people to focus on other parts that will still be around.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/staging/iio/cdc/Kconfig

@@ -13,16 +13,6 @@ config AD7150
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad7150.
 
-config AD7152
-	tristate "Analog Devices ad7152/3 capacitive sensor driver"
-	depends on I2C
-	help
-	  Say yes here to build support for Analog Devices capacitive sensors.
-	  (ad7152, ad7153) Provides direct access via sysfs.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ad7152.
-
 config AD7746
 	tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver"
 	depends on I2C

drivers/staging/iio/cdc/Makefile

@@ -3,5 +3,4 @@
 #
 
 obj-$(CONFIG_AD7150) += ad7150.o
-obj-$(CONFIG_AD7152) += ad7152.o
 obj-$(CONFIG_AD7746) += ad7746.o