diff --git a/lib/sha256.ts b/lib/sha256.ts
deleted file mode 100644
index f06c173c..00000000
--- a/lib/sha256.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-const crypto = require('crypto');
-
-function sha256(input: string): string {
-  return crypto
-      .createHash('sha256')
-      .update(input)
-      .digest("hex");
-}
-
-export default sha256;
\ No newline at end of file