AP_Airspeed: remove unnecessary includes from example

libraries/AP_Airspeed/examples/Airspeed/Airspeed.cpp

@@ -19,37 +19,10 @@
  *
  */
 
-#include <AP_Common/AP_Common.h>
-#include <AP_Progmem/AP_Progmem.h>
-#include <AP_Param/AP_Param.h>
-#include <AP_Math/AP_Math.h>
 #include <AP_HAL/AP_HAL.h>
-#include <AP_HAL_AVR/AP_HAL_AVR.h>
-#include <AP_HAL_Linux/AP_HAL_Linux.h>
-#include <AP_HAL_Empty/AP_HAL_Empty.h>
 #include <AP_ADC/AP_ADC.h>
 #include <AP_ADC_AnalogSource/AP_ADC_AnalogSource.h>
-#include <Filter/Filter.h>
-#include <AP_Buffer/AP_Buffer.h>
 #include <AP_Airspeed/AP_Airspeed.h>
-#include <AP_Vehicle/AP_Vehicle.h>
-#include <AP_Notify/AP_Notify.h>
-#include <AP_Compass/AP_Compass.h>
-#include <AP_Declination/AP_Declination.h>
-#include <AP_AHRS/AP_AHRS.h>
-#include <AP_NavEKF/AP_NavEKF.h>
-#include <AP_Terrain/AP_Terrain.h>
-#include <DataFlash/DataFlash.h>
-#include <AP_Baro/AP_Baro.h>
-#include <GCS_MAVLink/GCS_MAVLink.h>
-#include <AP_Mission/AP_Mission.h>
-#include <StorageManager/StorageManager.h>
-#include <AP_Terrain/AP_Terrain.h>
-#include <AP_GPS/AP_GPS.h>
-#include <AP_InertialSensor/AP_InertialSensor.h>
-#include <AP_BattMonitor/AP_BattMonitor.h>
-#include <AP_Rally/AP_Rally.h>
-#include <AP_RangeFinder/AP_RangeFinder.h>
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_APM1
 AP_ADC_ADS7844 apm1_adc;