Style: Replace header guards with #pragma once

platform/android/api/java_class_wrapper.h

@@ -28,8 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 
-#ifndef JAVA_CLASS_WRAPPER_H
-#define JAVA_CLASS_WRAPPER_H
+#pragma once
 
 #include "core/object/ref_counted.h"
 #include "core/variant/typed_array.h"
@@ -296,5 +295,3 @@ public:
 #endif
 	JavaClassWrapper();
 };
-
-#endif // JAVA_CLASS_WRAPPER_H