Remove fledgling server from client crate.

client/src/testing/mod.rs

@@ -1 +1 @@
-mod server;
+// TODO: Define handler(s).

client/src/testing/server.rs

@@ -1,26 +0,0 @@
-use std::net::SocketAddr;
-
-use anyhow::Context;
-use tokio::net::TcpListener;
-use tokio::sync::oneshot;
-
-struct ServerHandle {
-  address: SocketAddr,
-  shutdown_tx: oneshot::Sender<()>,
-}
-
-struct Server {
-  listener: TcpListener,
-  shutdown_rx: oneshot::Receiver<()>,
-}
-
-struct ServerBuilder {
-  // TODO
-}
-
-impl ServerBuilder {
-  pub async fn bind(self) -> anyhow::Result<(Server, ServerHandle)> {
-    let listener = TcpListener::bind("localhost:0").await.context("binding")?;
-    unimplemented!();
-  }
-}