doc: remove reference to the Sink trait in the MPSC documentation (#2476)

The implementation of the Sink trait was removed in 8a7e5778.

Fixes: #2464
Refs: #2389
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zeroed 2020-05-02 22:41:40 +02:00 committed by GitHub
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@ -6,10 +6,9 @@
//! Similar to `std`, channel creation provides [`Receiver`] and [`Sender`]
//! handles. [`Receiver`] implements `Stream` and allows a task to read values
//! out of the channel. If there is no message to read, the current task will be
//! notified when a new value is sent. [`Sender`] implements the `Sink` trait
//! and allows sending messages into the channel. If the channel is at capacity,
//! the send is rejected and the task will be notified when additional capacity
//! is available. In other words, the channel provides backpressure.
//! notified when a new value is sent. If the channel is at capacity, the send
//! is rejected and the task will be notified when additional capacity is
//! available. In other words, the channel provides backpressure.
//!
//! Unbounded channels are also available using the `unbounded_channel`
//! constructor.