diff --git a/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetism-waves-vacuum-overview/.gitkeep b/01.curriculum/01.physics-chemistry-biology/04.Niv4/04.electromagnetism/02.electromagnetic-waves-vacuum/02.electromagnetism-waves-vacuum-overview/.gitkeep deleted file mode 100644 index e69de29bb..000000000