syntax: Get rid of token::IdentStyle

src/libsyntax_ext/concat_idents.rs

@@ -40,7 +40,7 @@ pub fn expand_syntax_ext<'cx>(cx: &mut ExtCtxt, sp: Span, tts: &[TokenTree])
             }
         } else {
             match *e {
-                TokenTree::Token(_, token::Ident(ident, _)) => {
+                TokenTree::Token(_, token::Ident(ident)) => {
                     res_str.push_str(&ident.name.as_str())
                 },
                 _ => {

src/libsyntax_ext/format.rs

@@ -106,7 +106,7 @@ fn parse_args(ecx: &mut ExtCtxt, sp: Span, tts: &[ast::TokenTree])
         if named || (p.token.is_ident() && p.look_ahead(1, |t| *t == token::Eq)) {
             named = true;
             let ident = match p.token {
-                token::Ident(i, _) => {
+                token::Ident(i) => {
                     p.bump();
                     i
                 }