Style: Replace header guards with #pragma once

modules/ogg/ogg_packet_sequence.h

@@ -28,8 +28,7 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
 /**************************************************************************/
 
-#ifndef OGG_PACKET_SEQUENCE_H
-#define OGG_PACKET_SEQUENCE_H
+#pragma once
 
 #include "core/io/resource.h"
 #include "core/variant/typed_array.h"
@@ -130,5 +129,3 @@ public:
 	OggPacketSequencePlayback();
 	virtual ~OggPacketSequencePlayback();
 };
-
-#endif // OGG_PACKET_SEQUENCE_H