1 files changed, 0 insertions, 4 deletions
diff --git a/src/libsyntax/ext/pipes/proto.rs b/src/libsyntax/ext/pipes/proto.rs
index 6495750f93b..79072a2f577 100644
--- a/src/libsyntax/ext/pipes/proto.rs
+++ b/src/libsyntax/ext/pipes/proto.rs
@@ -8,15 +8,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::prelude::*;
-
 use ast;
 use codemap::span;
 use ext::base::ext_ctxt;
 use ext::pipes::ast_builder::{append_types, ext_ctxt_ast_builder, path};
 
-use core::to_str::ToStr;
-
 #[deriving(Eq)]
 pub enum direction { send, recv }