clean up join_stream

Signed-off-by: Yoshua Wuyts <[email protected]>

Author: yoshuawuyts

examples/main.rs

@@ -10,11 +10,6 @@ fn main() {
             let c = future::ready(Ok(1u8));
 
             assert_eq!(try_select!(a, b, c).await?, 1u8);
-
-            use async_macros::JoinStream;
-            use futures::stream::{self, StreamExt};
-            use futures::future::ready;
-
             Ok(())
         }
         main().await.unwrap();

src/join_stream.rs

@@ -58,9 +58,9 @@ where
 /// use futures::stream::{self, StreamExt};
 /// use futures::future::ready;
 ///
-/// let a = &mut stream::once(ready(1u8));
-/// let b = &mut stream::once(ready(2u8));
-/// let c = &mut stream::once(ready(3u8));
+/// let a = stream::once(ready(1u8));
+/// let b = stream::once(ready(2u8));
+/// let c = stream::once(ready(3u8));
 ///
 /// let mut s = join!(a, b, c);
 ///