AP_HAL_ChibiOS: remove HAL_CHIBIOS_ARCH_FMUV4

the boards that used this arch define their own sensors.

The ARCH define isn't used anywhere, nor is the PX4_BOARD_TYPE value

Author: peterbarker

libraries/AP_HAL_ChibiOS/hwdef/Pixracer/hwdef.dat

@@ -169,8 +169,6 @@ SPIDEV hmc5843     SPI1 DEVID5  MAG_CS     MODE3  11*MHZ  11*MHZ
 SPIDEV lis3mdl     SPI1 DEVID5  MAG_CS     MODE3 500*KHZ 500*KHZ
 SPIDEV ramtron     SPI2 DEVID10 FRAM_CS    MODE3   8*MHZ   8*MHZ
 
-define HAL_CHIBIOS_ARCH_FMUV4 1
-
 define HAL_STORAGE_SIZE        16384
 
 # enable RAMTROM parameter storage
@@ -212,7 +210,7 @@ COMPASS LIS3MDL SPI:lis3mdl false ROTATION_NONE
 COMPASS AK8963:probe_mpu9250 0 ROTATION_ROLL_180_YAW_90
 
 # also probe all types of external I2C compasses
-define HAL_PROBE_EXTERNAL_I2C_COMPASSES
+define HAL_PROBE_EXTERNAL_I2C_COMPASSES 1
 
 # one barometer
 BARO MS5611 SPI:ms5611_int

libraries/AP_HAL_ChibiOS/hwdef/luminousbee4/hwdef.dat

@@ -131,7 +131,6 @@ SPIDEV bmi088_g    SPI4 DEVID1  BMI088_GYRO_CS    MODE3 10*MHZ 10*MHZ
 SPIDEV bmi088_a    SPI4 DEVID2  BMI088_ACCEL_CS   MODE3 10*MHZ 10*MHZ
 SPIDEV ramtron     SPI2 DEVID10 FRAM_CS    		MODE3   8*MHZ   8*MHZ
 SPIDEV dwm1000     SPI4 DEVID5  UWB_CS     		MODE0   3*MHZ  20*MHZ
-define HAL_CHIBIOS_ARCH_FMUV4 1
 
 define HAL_STORAGE_SIZE        16384
 
@@ -176,7 +175,7 @@ COMPASS HMC5843 SPI:hmc5843 false ROTATION_PITCH_180
 COMPASS LIS3MDL SPI:lis3mdl false ROTATION_NONE
 
 # also probe all types of external I2C compasses
-define HAL_PROBE_EXTERNAL_I2C_COMPASSES
+define HAL_PROBE_EXTERNAL_I2C_COMPASSES 1
 
 # Barometer ( DPS310 under test on micro frame )
 BARO MS5611 SPI:ms5611_int