ArduPlane: replace header guard with pragma once

ArduPlane/Parameters.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
+#pragma once
-#ifndef PARAMETERS_H
-#define PARAMETERS_H
 
 #include <AP_Common/AP_Common.h>
 
@@ -552,5 +550,3 @@ public:
 };
 
 extern const AP_Param::Info var_info[];
-
-#endif // PARAMETERS_H

ArduPlane/Plane.h

@@ -1,7 +1,5 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
+#pragma once
-#ifndef _PLANE_H
-#define _PLANE_H
 
 #define THISFIRMWARE "ArduPlane V3.5.0"
 #define FIRMWARE_VERSION 3,5,0,FIRMWARE_VERSION_TYPE_OFFICIAL
@@ -1067,5 +1065,3 @@ extern Plane plane;
 
 using AP_HAL::millis;
 using AP_HAL::micros;
-
-#endif // _PLANE_H_

ArduPlane/config.h

@@ -19,6 +19,7 @@
 //
 // - Try to keep this file organised in the same order as APM_Config.h.example
 //
+#pragma once
 
 #include "defines.h"
 

ArduPlane/defines.h

@@ -1,7 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
-
+#pragma once
-#ifndef _DEFINES_H
-#define _DEFINES_H
 
 // Internal defines, don't edit and expect things to work
 // -------------------------------------------------------
@@ -207,5 +205,3 @@ enum {
     USE_REVERSE_THRUST_FBWB                     = (1<<9),
     USE_REVERSE_THRUST_GUIDED                   = (1<<10),
 };
-
-#endif // _DEFINES_H