chore: Remove unused imports and dead code causing compiler warnings

stub/src/main.rs

@@ -1,7 +1,6 @@
 use clap::Parser;
 use futures_util::{SinkExt, StreamExt};
 use std::sync::Arc;
-use tokio::io::AsyncBufReadExt;
 use tokio::sync::mpsc;
 
 #[derive(Parser)]