diff --git a/themes-third-party/mkdocs-gitbook-theme b/themes-third-party/mkdocs-gitbook-theme
deleted file mode 160000
index 6e86220e1e41a8c94ab6891c7aabf979de9bd049..0000000000000000000000000000000000000000
--- a/themes-third-party/mkdocs-gitbook-theme
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 6e86220e1e41a8c94ab6891c7aabf979de9bd049