Update imports

ctru-rs/examples/network-sockets.rs

@@ -1,11 +1,10 @@
-use std::io;
 use ctru::console::Console;
 use ctru::gfx::Gfx;
 use ctru::services::apt::Apt;
 use ctru::services::hid::{Hid, KeyPad};
 use ctru::services::soc::Soc;
 
-use std::io::{Read, Write};
+use std::io::{self, Read, Write};
 use std::net::{Shutdown, TcpListener};
 use std::time::Duration;