Remove unnecessary code from example

Author: emhane

examples/09_05_final_tcp_server/src/main.rs

@@ -106,8 +106,6 @@ mod tests {
         };
 
         handle_connection(&mut stream).await;
-        let mut buf = [0u8; 1024];
-        stream.read(&mut buf).await.unwrap();
 
         let expected_contents = fs::read_to_string("hello.html").unwrap();
         let expected_response = format!("HTTP/1.1 200 OK\r\n\r\n{}", expected_contents);