std: remove str::{connect,concat}*.

src/libsyntax/ext/asm.rs

@@ -120,7 +120,7 @@ pub fn expand_asm(cx: @ExtCtxt, sp: span, tts: &[ast::token_tree])
                     clobs.push(clob);
                 }
 
-                cons = str::connect(clobs, ",");
+                cons = clobs.connect(",");
             }
             Options => {
                 let option = p.parse_str();