io: move into `tokio` crate (#1691)

A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).

The `io` implementation is now provided by the main `tokio` crate.
Functionality can be opted out of by using the various net related
feature flags.

1 files changed, 1 insertions, 2 deletions

diff --git a/tokio/src/net/tcp/stream.rs b/tokio/src/net/tcp/stream.rs
index a3ac18a9..09629cfb 100644
--- a/tokio/src/net/tcp/stream.rs
+++ b/tokio/src/net/tcp/stream.rs
@@ -1,9 +1,8 @@
+use crate::io::{AsyncRead, AsyncWrite};
 use crate::net::tcp::split::{split, ReadHalf, WriteHalf};
 use crate::net::util::PollEvented;
 use crate::net::ToSocketAddrs;
 
-use tokio_io::{AsyncRead, AsyncWrite};
-
 use bytes::{Buf, BufMut};
 use futures_core::ready;
 use futures_util::future::poll_fn;