Style: Replace header guards with #pragma once

modules/gdscript/tests/gdscript_test_runner_suite.h

@@ -28,8 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 
-#ifndef GDSCRIPT_TEST_RUNNER_SUITE_H
-#define GDSCRIPT_TEST_RUNNER_SUITE_H
+#pragma once
 
 #include "gdscript_test_runner.h"
 
@@ -105,5 +104,3 @@ TEST_CASE("[Modules][GDScript] Validate built-in API") {
 }
 
 } // namespace GDScriptTests
-
-#endif // GDSCRIPT_TEST_RUNNER_SUITE_H