Update uci_connection.rs

src/uci_connection.rs

@@ -5,7 +5,7 @@ use std::marker::PhantomData;
 use std::process::Stdio;
 use std::sync::Arc;
 use tokio::io;
-use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader, BufWriter};
+use tokio::io::{AsyncBufReadExt, AsyncWriteExt, BufReader};
 use tokio::process::{Child, ChildStdin, ChildStdout, Command};
 use tokio::sync::mpsc;
 use tokio::task::JoinHandle;