diff --git a/references/copy-files.php b/references/copy-files.php
deleted file mode 100644
index 9e89ca3..0000000
--- a/references/copy-files.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-$cmd = getopt('f:');
-
-$f = $cmd['f'] ?? null;
-if (!$f) {
-    exit(1);
-}
-
-$file = file($f);