apps: lc-compliance: Replace manual include guard with pragma once

libcamera uses #pragma once for include guards. One manual guard crept
in lc-compliance, replace it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>

src/apps/lc-compliance/test_base.h

@@ -4,9 +4,7 @@
  *
  * Base definitions for tests
  */
-
-#ifndef __LC_COMPLIANCE_TEST_BASE_H__
-#define __LC_COMPLIANCE_TEST_BASE_H__
+#pragma once
 
 #include <libcamera/libcamera.h>
 
@@ -20,5 +18,3 @@ protected:
 
 	std::shared_ptr<libcamera::Camera> camera_;
 };
-
-#endif /* __LC_COMPLIANCE_TEST_BASE_H__ */