diff --git a/src/crypto/shen_ed25519_ref b/src/crypto/shen_ed25519_ref
deleted file mode 160000
index ecfb9166a..000000000
--- a/src/crypto/shen_ed25519_ref
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ecfb9166ab10de6c42f89e5ccb22ac9547505218