Remove Graphics module and fix compilation

include/Nazara/Graphics/Graphics.hpp

@@ -1,32 +0,0 @@
-// Copyright (C) 2020 Jérôme Leclercq
-// This file is part of the "Nazara Engine - Graphics module"
-// For conditions of distribution and use, see copyright notice in Config.hpp
-
-#pragma once
-
-#ifndef NAZARA_GRAPHICS_HPP
-#define NAZARA_GRAPHICS_HPP
-
-#include <Nazara/Prerequisites.hpp>
-#include <Nazara/Graphics/Config.hpp>
-
-namespace Nz
-{
-	class NAZARA_GRAPHICS_API Graphics
-	{
-		public:
-			Graphics() = delete;
-			~Graphics() = delete;
-
-			static bool Initialize();
-
-			static bool IsInitialized();
-
-			static void Uninitialize();
-
-		private:
-			static unsigned int s_moduleReferenceCounter;
-	};
-}
-
-#endif // NAZARA_GRAPHICS_HPP