fix(server/channel): Remove broken doctest from comments

server/src/channel/mod.rs

@@ -18,29 +18,6 @@
 //! through the one-shot channel. This mechanism serves as a notification system for other components of the
 //! application to react accordingly to the disconnection.
 //!
-//! ## Example usage
-//!
-//! ```rust
-//! use futures::Stream;
-//! use std::task::{Context, Poll};
-//! use std::{ops::Deref, pin::Pin};
-//! use tokio::sync::{mpsc, oneshot};
-//!
-//! // Define a new DisconnectChannel.
-//! let (grpc_rx, disconnect_tx): (mpsc::Receiver<String>, oneshot::Sender<()>) =
-//! mpsc::channel::<String>(10);
-//! let disconnect_channel = DisconnectChannel { grpc_rx, disconnect_tx };
-//!
-//! // Use the DisconnectChannel as a stream.
-//! async fn process_messages(disconnect_channel: DisconnectChannel<String>) {
-//!     while let Some(message) = disconnect_channel.next().await {
-//!         println!("Received message: {}", message);
-//!     }
-//! }
-//!
-//! // Upon dropping disconnect_channel, the one-shot channel will be triggered.
-//! ```
-//!
 //! ## Further Reading
 //!
 //! For more insights and discussions on implementing disconnection detection in Rust asynchronous