Add cleanup for transition to stow

Makefile

@@ -25,3 +25,6 @@ update: update-repo
 
 update-repo:
 	git pull --rebase
+
+clean:
+	bash remove-symlinks

remove-symlinks

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+find $HOME -maxdepth 1 -type l | while IFS= read -r symlink; do
+  if readlink "$symlink" | grep -q '^dotfiles/'; then
+    echo "removing $symlink"
+    rm "$symlink"
+  fi
+done