replace include guards with pragma once

src/logic/ChunksController.hpp

@@ -1,5 +1,4 @@
-#ifndef VOXELS_CHUNKSCONTROLLER_HPP_
-#define VOXELS_CHUNKSCONTROLLER_HPP_
+#pragma once
 
 #include <memory>
 
@@ -31,5 +30,3 @@ public:
     /// @param maxDuration milliseconds reserved for chunks loading
     void update(int64_t maxDuration);
 };
-
-#endif  // VOXELS_CHUNKSCONTROLLER_HPP_