collections::range: Fix use style

Author: Ulrik Sverdrup

src/libcollections/range.rs

@@ -11,12 +11,7 @@
 //! Range syntax.
 
 use core::option::Option::{self, None, Some};
-use core::ops::{
-    RangeFull,
-    Range,
-    RangeTo,
-    RangeFrom
-};
+use core::ops::{RangeFull, Range, RangeTo, RangeFrom};
 
 #[unstable(feature = "collections", reason = "was just added")]
 /// **RangeArgument** is implemented by Rust's built-in range types, produced