Update Tokio to use `std::future`. (#1120)

A first pass at updating Tokio to use `std::future`.

Implementations of `Future` from the futures crate are updated to implement
`Future` from std. Implementations of `Stream` are moved to a feature flag.

This commits disables a number of crates that have not yet been updated.

1 files changed, 0 insertions, 24 deletions

diff --git a/tokio-futures/src/sink/mod.rs b/tokio-futures/src/sink/mod.rs
deleted file mode 100644
index 90382951..00000000
--- a/tokio-futures/src/sink/mod.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-//! Use sinks with `async` / `await`.
-
-mod send;
-
-pub use self::send::Send;
-
-use futures::Sink;
-
-/// An extension trait which adds utility methods to `Sink` types.
-pub trait SinkExt: Sink {
-    /// Send an item into the sink.
-    ///
-    /// Note that, **because of the flushing requirement, it is usually better
-    /// to batch together items to send via `send_all`, rather than flushing
-    /// between each item.**
-    fn send_async(&mut self, item: Self::SinkItem) -> Send<'_, Self>
-    where
-        Self: Sized + Unpin,
-    {
-        Send::new(self, item)
-    }
-}
-
-impl<T: Sink> SinkExt for T {}