diff --git a/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/01.elements-revolution-symetry/01.elements-revolution-symetry-main/textbook.fr.md b/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/01.elements-revolution-symetry/01.elements-revolution-symetry-main/textbook.fr.md
deleted file mode 100644
index 305ebaeeb..000000000
--- a/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/05.paraxial-optics/02.paraxial-optics-simple-elements/01.elements-revolution-symetry/01.elements-revolution-symetry-main/textbook.fr.md
+++ /dev/null
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----
-title: 'nouveau cours : principal'
----
-
-nouveau cours : principal
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