Always include Arduino.h

Author: daradib

Adafruit_Sensor.h

@@ -20,14 +20,7 @@
 #ifndef _ADAFRUIT_SENSOR_H
 #define _ADAFRUIT_SENSOR_H
 
-#ifndef ARDUINO
-#include <stdint.h>
-#elif ARDUINO >= 100
 #include "Arduino.h"
-#include "Print.h"
-#else
-#include "WProgram.h"
-#endif
 
 /* Constants */
 #define SENSORS_GRAVITY_EARTH (9.80665F) /**< Earth's gravity in m/s^2 */