diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index 45e781a8..00000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "document/core/util/katex"]
-	path = document/core/util/katex
-	url = https://github.com/KaTeX/KaTeX/