FMUv4: Disable unused ADC channels

src/drivers/boards/px4fmu-v4/px4fmu_init.c

@@ -219,10 +219,6 @@ __EXPORT int nsh_archinitialize(void)
 	stm32_configgpio(GPIO_ADC1_IN3);	/* BATT_CURRENT_SENS */
 	stm32_configgpio(GPIO_ADC1_IN4);	/* VDD_5V_SENS */
 
-	stm32_configgpio(GPIO_ADC1_IN13);	/* FMU_AUX_ADC_1 */
-	stm32_configgpio(GPIO_ADC1_IN14);	/* FMU_AUX_ADC_2 */
-	stm32_configgpio(GPIO_ADC1_IN15);	/* PRESSURE_SENS */
-
 	/* configure power supply control/sense pins */
 	stm32_configgpio(GPIO_PERIPH_3V3_EN);
 	stm32_configgpio(GPIO_VDD_BRICK_VALID);