APM_Control: replace header guard with pragma once

libraries/APM_Control/AP_AutoTune.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_AUTOTUNE_H__
-#define __AP_AUTOTUNE_H__
+#pragma once
 
 #include <AP_HAL/AP_HAL.h>
 #include <AP_Param/AP_Param.h>
@@ -100,6 +98,3 @@ private:
     void save_float_if_changed(AP_Float &v, float value, const char *suffix);
     void save_int16_if_changed(AP_Int16 &v, int16_t value, const char *suffix);
 };
-
-#endif // __AP_AUTOTUNE_H__
-

libraries/APM_Control/AP_PitchController.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_PITCH_CONTROLLER_H__
-#define __AP_PITCH_CONTROLLER_H__
+#pragma once
 
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Common/AP_Common.h>
@@ -49,5 +47,3 @@ private:
 	AP_AHRS &_ahrs;
 	
 };
-
-#endif // __AP_PITCH_CONTROLLER_H__

libraries/APM_Control/AP_RollController.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_ROLL_CONTROLLER_H__
-#define __AP_ROLL_CONTROLLER_H__
+#pragma once
 
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Common/AP_Common.h>
@@ -46,5 +44,3 @@ private:
 	AP_AHRS &_ahrs;
 
 };
-
-#endif // __AP_ROLL_CONTROLLER_H__

libraries/APM_Control/AP_SteerController.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_STEER_CONTROLLER_H__
-#define __AP_STEER_CONTROLLER_H__
+#pragma once
 
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Common/AP_Common.h>
@@ -62,5 +60,3 @@ private:
 
 	AP_AHRS &_ahrs;
 };
-
-#endif // __AP_STEER_CONTROLLER_H__

libraries/APM_Control/AP_YawController.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
-#ifndef __AP_YAW_CONTROLLER_H__
-#define __AP_YAW_CONTROLLER_H__
+#pragma once
 
 #include <AP_AHRS/AP_AHRS.h>
 #include <AP_Common/AP_Common.h>
@@ -49,5 +47,3 @@ private:
 
 	AP_AHRS &_ahrs;
 };
-
-#endif // __AP_YAW_CONTROLLER_H__