Removing useless header include

Signed-off-by: Thibaut VIARD <[email protected]>

Author: aethaniel

cores/arduino/wiring_digital.c

@@ -16,10 +16,8 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-//#include "Arduino.h"
 #include "wiring_digital.h"
 #include "WVariant.h"
-//#include "Arduino.h"
 
 #ifdef __cplusplus
  extern "C" {