diff --git a/lib/openzeppelin-contracts b/lib/openzeppelin-contracts
deleted file mode 160000
index 69c8def..0000000
--- a/lib/openzeppelin-contracts
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 69c8def5f222ff96f2b5beff05dfba996368aa79