CodeBench: promptit kokonaan englanniksi — poistettu suomenkieliset esimerkit

kipina-codebench/prompts/code-rs.md

@@ -69,5 +69,5 @@ async fn spawn_server() -> (reqwest::Client, String) {
 }
 
 - Each #[tokio::test] calls spawn_server() to get (client, url)
-- Unique descriptive data in Finnish, NOT generic "test" strings
+- Unique descriptive data, NOT generic "test" strings
 - Use serde_json::json!() for request bodies