chore: dry out 410 logic (#45257)

api-server/src/server/utils/deprecatedEndpoint.js

@@ -0,0 +1,8 @@
+export function deprecatedEndpoint(_, res) {
+  return res.status(410).json({
+    message: {
+      type: 'info',
+      message: 'Please reload the app, this feature is no longer available.'
+    }
+  });
+}