tests/sensors_n_z.conf: fix duplicated setting of CONFIG options

A few CONFIG options got set twice in sensors_n_z.conf, remove the
duplicates as we get warnings associated with this:

warning: override: reassigning to symbol GPIO
warning: override: reassigning to symbol SENSOR
warning: override: reassigning to symbol SPI
warning: override: reassigning to symbol SYS_LOG_SENSOR_LEVEL

Change-Id: I7a723218db8e365bdb45c004e93bd2c4f55ab5ac
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
1 file changed