lc-compliance: Convert to pragma once

Remove the verbose #ifndef/#define/#endif pattern for maintaining
header idempotency, and replace it with a simple #pragma once.

This simplifies the headers, and prevents redundant changes when
header files get moved.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>

src/lc-compliance/environment.h

@@ -4,8 +4,8 @@
  *
  * environment.h - Common environment for tests
  */
-#ifndef __LC_COMPLIANCE_ENVIRONMENT_H__
-#define __LC_COMPLIANCE_ENVIRONMENT_H__
+
+#pragma once
 
 #include <libcamera/libcamera.h>
 
@@ -25,5 +25,3 @@ private:
 	std::string cameraId_;
 	libcamera::CameraManager *cm_;
 };
-
-#endif /* __LC_COMPLIANCE_ENVIRONMENT_H__ */

src/lc-compliance/simple_capture.h

@@ -4,8 +4,8 @@
  *
  * simple_capture.h - Simple capture helper
  */
-#ifndef __LC_COMPLIANCE_SIMPLE_CAPTURE_H__
-#define __LC_COMPLIANCE_SIMPLE_CAPTURE_H__
+
+#pragma once
 
 #include <memory>
 
@@ -63,5 +63,3 @@ private:
 	unsigned int captureCount_;
 	unsigned int captureLimit_;
 };
-
-#endif /* __LC_COMPLIANCE_SIMPLE_CAPTURE_H__ */