diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n3/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n3/textbook.en.md
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--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/classical-mechanics/n3/textbook.en.md
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@@ -1,15 +0,0 @@
----
-title: Brainstorming to structure a theme "Classical mechanics"
-published: true
-routable: true
-visible: false
-lessons:
-    - slug: brainstorming-123-classical-mechanics
-      order: 3
-    - slug: brainstorming-234-classical-mechanics
-      order: 2
----
-
-#### Brainstorming to structure a theme "Classical mechanics" : level 3
-
---------------------------------
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