cleanup imports

src/os/unix/net/datagram.rs

@@ -3,7 +3,6 @@
 use std::fmt;
 use std::net::Shutdown;
 
-use super::SocketAddr;
 use crate::future;
 use crate::io;
 use crate::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};

src/os/unix/net/listener.rs

@@ -4,7 +4,6 @@ use std::fmt;
 use std::future::Future;
 use std::pin::Pin;
 
-use super::SocketAddr;
 use super::UnixStream;
 use crate::future;
 use crate::io;

src/os/unix/net/stream.rs

@@ -5,7 +5,6 @@ use std::io::{Read as _, Write as _};
 use std::net::Shutdown;
 use std::pin::Pin;
 
-use super::SocketAddr;
 use crate::future;
 use crate::io::{self, Read, Write};
 use crate::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd, RawFd};