Revert "iio: imu: Add support for Kionix KMX61 sensor"

The two halves of this part can run largely independently.  Hence
a version 4 of this patch followed that reorganized things completely.

This reverts commit d7d787d291.

drivers/iio/imu/Kconfig

@@ -25,15 +25,6 @@ config ADIS16480
 	  Say yes here to build support for Analog Devices ADIS16375, ADIS16480,
 	  ADIS16485, ADIS16488 inertial sensors.
 
-config KMX61
-	tristate "Kionix KMX61 6-axis accelerometer and magnetometer"
-	depends on I2C
-	help
-	  Say Y here if you want to build a driver for Kionix KMX61 6-axis accelerometer
-	  and magnetometer.
-	  To compile this driver as module, choose M here: the module will be called
-	  kmx61.
-
 source "drivers/iio/imu/inv_mpu6050/Kconfig"
 
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