diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index aa2072c..0000000
--- a/.gitmodules
+++ /dev/null
@@ -1,4 +0,0 @@
-[submodule "doc"]
-	path = doc
-	url = https://github.com/gflags/gflags.git
-	branch = gh-pages
diff --git a/doc b/doc
deleted file mode 160000
index 8411df7..0000000
--- a/doc
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 8411df715cf522606e3b1aca386ddfc0b63d34b4