1 files changed, 0 insertions, 7 deletions
diff --git a/src/libsyntax/diagnostic.rs b/src/libsyntax/diagnostic.rs
index 35022b68ebb..0f2374a892b 100644
--- a/src/libsyntax/diagnostic.rs
+++ b/src/libsyntax/diagnostic.rs
@@ -8,16 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::prelude::*;
-
 use codemap::{Pos, span};
 use codemap;
 
-use core::io::WriterUtil;
-use core::io;
-use core::str;
-use core::vec;
-
 use std::term;
 
 pub type Emitter = @fn(cmsp: Option<(@codemap::CodeMap, span)>,