Remove the extension traits for Readers/Writers

These methods are all excellent candidates for default methods, so there's no
need to require extra imports of various traits.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libsyntax/ext/source_util.rs b/src/libsyntax/ext/source_util.rs
index 119a74cccd6..fda6f782af4 100644
--- a/src/libsyntax/ext/source_util.rs
+++ b/src/libsyntax/ext/source_util.rs
@@ -20,7 +20,7 @@ use parse::token::{get_ident_interner};
 use print::pprust;
 
 use std::rt::io;
-use std::rt::io::extensions::ReaderUtil;
+use std::rt::io::Reader;
 use std::rt::io::file::FileInfo;
 use std::str;