remove dead code

src/runtime/src/proto.rs

@@ -51,25 +51,6 @@ pub async fn read_i32(stream: &TcpStream) -> Result<i32> {
     }).await?)
 }
 
-pub async fn read_i64(stream: &TcpStream) -> Result<i64> {
-    Ok(stream.recv(|buf| {
-        if buf.len() >= 8 {
-            let value =
-                  ((buf[0] as i64) << 56)
-                | ((buf[1] as i64) << 48)
-                | ((buf[2] as i64) << 40)
-                | ((buf[3] as i64) << 32)
-                | ((buf[4] as i64) << 24)
-                | ((buf[5] as i64) << 16)
-                | ((buf[6] as i64) << 8)
-                |  (buf[7] as i64);
-            Poll::Ready((8, value))
-        } else {
-            Poll::Pending
-        }
-    }).await?)
-}
-
 pub async fn read_chunk(stream: &TcpStream, destination: &mut [u8]) -> Result<()> {
     let total = destination.len();
     let destination = RefCell::new(destination);
@@ -111,27 +92,3 @@ pub async fn write_i32(stream: &TcpStream, value: i32) -> Result<()> {
          value        as u8].iter().copied()).await?;
     Ok(())
 }
-
-pub async fn write_i64(stream: &TcpStream, value: i64) -> Result<()> {
-    stream.send([
-        (value >> 56) as u8,
-        (value >> 48) as u8,
-        (value >> 40) as u8,
-        (value >> 32) as u8,
-        (value >> 24) as u8,
-        (value >> 16) as u8,
-        (value >>  8) as u8,
-         value        as u8].iter().copied()).await?;
-    Ok(())
-}
-
-pub async fn write_bytes(stream: &TcpStream, value: &[u8]) -> Result<()> {
-    write_i32(stream, value.len() as i32).await?;
-    stream.send(value.iter().copied()).await?;
-    Ok(())
-}
-
-pub async fn write_string(stream: &TcpStream, value: &str) -> Result<()> {
-    write_bytes(stream, value.as_bytes()).await?;
-    Ok(())
-}