Remove X11 dependency properly (as it's handled by SDL and EGL)

include/Nazara/OpenGLRenderer/Wrapper/Linux/EGLContextX11.hpp

@@ -25,9 +25,6 @@ namespace Nz::GL
 
 			EGLContextX11& operator=(const EGLContextX11&) = delete;
 			EGLContextX11& operator=(EGLContextX11&&) = delete;
-
-		private:
-			::Display* m_xdisplay = nullptr;
 	};
 }