diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.es.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.es.md
deleted file mode 100644
index b3829d433..000000000
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/04.use-of-basic-optical-elements/02.mirror/02.new-course-overview/cheatsheet.es.md
+++ /dev/null
@@ -1,7 +0,0 @@
----
-title: 'nuevo curso : síntesis'
-published: true
-visible: true
----
-
-nuevo curso : síntesis
\ No newline at end of file