Remove native "cdecl" ABI

src/comp/syntax/print/pprust.rs

@@ -401,7 +401,6 @@ fn print_item(s: ps, &&item: @ast::item) {
       ast::item_native_mod(nmod) {
         head(s, "native");
         alt nmod.abi {
-          ast::native_abi_cdecl. { word_nbsp(s, "\"cdecl\""); }
           ast::native_abi_rust_intrinsic. {
             word_nbsp(s, "\"rust-intrinsic\"");
           }