Reformat use declarations.

The previous commit updated `rustfmt.toml` appropriately. This commit is
the outcome of running `x fmt --all` with the new formatting options.

library/core/src/array/iter.rs

@@ -1,14 +1,11 @@
 //! Defines the `IntoIter` owned iterator for arrays.
 
+use crate::intrinsics::transmute_unchecked;
+use crate::iter::{self, FusedIterator, TrustedLen, TrustedRandomAccessNoCoerce};
+use crate::mem::MaybeUninit;
 use crate::num::NonZero;
-use crate::{
-    fmt,
-    intrinsics::transmute_unchecked,
-    iter::{self, FusedIterator, TrustedLen, TrustedRandomAccessNoCoerce},
-    mem::MaybeUninit,
-    ops::{IndexRange, Range},
-    ptr,
-};
+use crate::ops::{IndexRange, Range};
+use crate::{fmt, ptr};
 
 /// A by-value [array] iterator.
 #[stable(feature = "array_value_iter", since = "1.51.0")]

library/core/src/array/mod.rs

@@ -23,7 +23,6 @@ mod equality;
 mod iter;
 
 pub(crate) use drain::drain_array_with;
-
 #[stable(feature = "array_value_iter", since = "1.51.0")]
 pub use iter::IntoIter;