Merge branch 'master' of https://github.com/tokio-rs/bytes into redun…

…dant-reserve

src/bytes_mut.rs

@@ -1,4 +1,4 @@
-use core::iter::{FromIterator, Iterator};
+use core::iter::FromIterator;
 use core::mem::{self, ManuallyDrop, MaybeUninit};
 use core::ops::{Deref, DerefMut};
 use core::ptr::{self, NonNull};