no print useless

src/main.rs

@@ -172,7 +172,6 @@ fn read_n_bytes(file: &mut File, len: u32) -> Vec<u8> {
     let mut buffer = vec![0u8; 1];
     while n < len {
         let read = file.read_exact(&mut buffer);
-        eprintln!("buffer = {:?}", buffer);
         match read {
             Ok(_c) => {
                 out.push(buffer[0]);