Replace include guards with pragma once

include/PSX/Auxiliary/lz4_decompressor.hpp

@@ -1,5 +1,4 @@
-#ifndef __JABYENGINE_LZ4_DECOMPRESSOR_HPP__
-#define __JABYENGINE_LZ4_DECOMPRESSOR_HPP__
+#pragma once
 #include "../../stddef.h"
 #include "array_range.hpp"
 #include "types.hpp"
@@ -76,6 +75,4 @@ namespace JabyEngine {
 
         Result process(ArrayRange<const uint8_t> data, bool is_last);
     };
-}
-
-#endif //!__JABYENGINE_LZ4_DECOMPRESSOR_HPP__
+}