check_type: relicense to Public domain

[ccan] / ccan / check_type / LICENSE

diff --git a/ccan/check_type/LICENSE b/ccan/check_type/LICENSE
deleted file mode 120000 (symlink)
index dc314ec..0000000
--- a/ccan/check_type/LICENSE
+++ /dev/null
@@ -1 +0,0 @@
-../../licenses/LGPL-2.1
\ No newline at end of file