Deleted 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/07.optical-instruments-design/topic.en.md, 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/07.optical-instruments-design/topic.es.md, 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/07.optical-instruments-design/topic.fr.md files