diff --git a/cli/tests/host.rs b/cli/tests/host.rs
index 296b92f..605b5be 100644
--- a/cli/tests/host.rs
+++ b/cli/tests/host.rs
@@ -1000,15 +1000,6 @@ async fn ask_until(
     .unwrap_or_else(|_| panic!("{actor} never gave the wanted answer"))
 }
 
-/// Every message that arrives until the mailbox is quiet for `quiet`.
-async fn drain(mailbox: &mut mpsc::Receiver<Envelope>, quiet: Duration) -> Vec<Envelope> {
-    let mut messages = Vec::new();
-    while let Ok(Some(message)) = tokio::time::timeout(quiet, mailbox.recv()).await {
-        messages.push(message);
-    }
-    messages
-}
-
 /// The `fs_changed` bodies among `messages` (all from `fs`).
 fn fs_events(messages: Vec<Envelope>) -> Vec<Value> {
     messages