tests: drivers: nrfx_integration_test: remove selecting PRS BOX > 0

Remove selecting PRS BOX other than PRS_BOX_0, as it now causes
compilation errors due to not checking if `NRFX_PRS_BOX_*_ADDR`
is defined in nrfx driver.

Signed-off-by: Magdalena Pastula <[email protected]>

Author: magp-nordic

tests/drivers/nrfx_integration_test/Kconfig

@@ -142,9 +142,5 @@ config NRFX_ALL_DRIVERS
 	select NRFX_WDT31	if HAS_HW_NRF_WDT31
 	select NRFX_WDT130	if HAS_HW_NRF_WDT130
 	select NRFX_PRS_BOX_0
-	select NRFX_PRS_BOX_1
-	select NRFX_PRS_BOX_2
-	select NRFX_PRS_BOX_3
-	select NRFX_PRS_BOX_4
 
 source "Kconfig.zephyr"