add copyright header

TheFox0x7 · TheFox0x7 · commit 3cdf7525ebfc · 2025-03-14T23:34:24.000+01:00
diff --git a/modules/setting/removed.go b/modules/setting/removed.go
@@ -1,3 +1,6 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
 package setting
 
 import (
