Remove some submodules

Author: pomber

.gitmodules

@@ -1,15 +1,3 @@
-[submodule "demos/the-x-in-mdx"]
-	path = demos/the-x-in-mdx
-	url = https://github.com/pomber/the-x-in-mdx
-[submodule "demos/hooks-talk-demo"]
-	path = demos/hooks-talk-demo
-	url = https://github.com/code-hike/hooks-talk-demo
-[submodule "demos/swr-minidocs-demo"]
-	path = demos/swr-minidocs-demo
-	url = https://github.com/code-hike/swr-minidocs-demo
-[submodule "demos/nextjs-post-demo"]
-	path = demos/nextjs-post-demo
-	url = https://github.com/code-hike/nextjs-post-demo
 [submodule "demos/react-tutorial-demo"]
 	path = demos/react-tutorial-demo
 	url = https://github.com/code-hike/react-tutorial-demo

demos/hooks-talk-demo

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# from https://stackoverflow.com/a/7646931/1325646
+
+# Remove config entries:
+
+git config -f .git/config --remove-section submodule.demos/$1
+git config -f .gitmodules --remove-section submodule.demos/$1
+git add .gitmodules
+
+# Remove directory from index:
+
+git rm --cached demos/$1
+
+# Delete unused files:
+rm -rf demos/$1
+rm -rf .git/modules/demos/$1