soc/raspi3: remove config FLASH_*

soc/arm/qemu_raspi3/Kconfig.defconfig

@@ -15,15 +15,6 @@ config NUM_IRQS
 config SYS_CLOCK_HW_CYCLES_PER_SEC
 	default 62500000
 
-# Workaround for not being able to have commas in macro arguments
-DT_CHOSEN_Z_FLASH := zephyr,flash
-
-config FLASH_SIZE
-	default $(dt_chosen_reg_size_int,$(DT_CHOSEN_Z_FLASH),0,K)
-
-config FLASH_BASE_ADDRESS
-	default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_FLASH))
-
 config ARM_CUSTOM_INTERRUPT_CONTROLLER
     default y