add IteratorUtil to the prelude

src/libsyntax/ext/bytes.rs

@@ -10,7 +10,6 @@
 
 /* The compiler code necessary to support the bytes! extension. */
 
-use core::iterator::IteratorUtil;
 use ast;
 use codemap::span;
 use ext::base::*;

src/libsyntax/ext/deriving/generic.rs

@@ -174,7 +174,6 @@ use opt_vec;
 
 use core::uint;
 use core::vec;
-use core::iterator::IteratorUtil;
 
 pub use self::ty::*;
 mod ty;

src/libsyntax/ext/deriving/iter_bytes.rs

@@ -16,7 +16,6 @@ use ext::base::ExtCtxt;
 use ext::build::AstBuilder;
 use ext::deriving::generic::*;
 
-use core::iterator::IteratorUtil;
 
 pub fn expand_deriving_iter_bytes(cx: @ExtCtxt,
                                   span: span,

src/libsyntax/ext/deriving/mod.rs

@@ -19,7 +19,6 @@ library.
 */
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use ast::{enum_def, ident, item, Generics, meta_item, struct_def};
 use ext::base::ExtCtxt;

src/libsyntax/ext/expand.rs

@@ -27,7 +27,6 @@ use parse::token::{ident_to_str, intern};
 use visit;
 use visit::Visitor;
 
-use core::iterator::IteratorUtil;
 use core::vec;
 
 pub fn expand_expr(extsbox: @mut SyntaxEnv,

src/libsyntax/ext/pipes/pipec.rs

@@ -23,7 +23,6 @@ use ext::quote::rt::*;
 use opt_vec;
 use opt_vec::OptVec;
 
-use core::iterator::IteratorUtil;
 use core::vec;
 
 pub trait gen_send {

src/libsyntax/ext/tt/macro_parser.rs

@@ -22,7 +22,6 @@ use parse::parser::Parser;
 use parse::token::{Token, EOF, to_str, nonterminal, get_ident_interner, ident_to_str};
 use parse::token;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use core::uint;
 use core::vec;

src/libsyntax/ext/tt/transcribe.rs

@@ -19,7 +19,6 @@ use parse::token::{EOF, INTERPOLATED, IDENT, Token, nt_ident};
 use parse::token::{ident_to_str};
 use parse::lexer::TokenAndSpan;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use core::option;