Revert changes to servo_arc, style_derive, and style_traits (#31387)

This reverts the Rust edition updates to these three traits as well as
incorporates https://phabricator.services.mozilla.com/D117887. The
purpose of this change is to reduce the diff with upstream stylo.

Finally, formatting is disabled for these crates as well.

1 files changed, 1 insertions, 7 deletions

diff --git a/components/style_derive/to_css.rs b/components/style_derive/to_css.rs
index c844a1c84ef..aa335366485 100644
--- a/components/style_derive/to_css.rs
+++ b/components/style_derive/to_css.rs
@@ -3,15 +3,9 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 use darling::util::Override;
-use darling::FromDeriveInput;
-use darling::FromField;
-use darling::FromMeta;
-use darling::FromVariant;
 use derive_common::cg;
 use proc_macro2::{Span, TokenStream};
-use quote::quote;
 use quote::{ToTokens, TokenStreamExt};
-use syn::parse_quote;
 use syn::{self, Data, Ident, Path, WhereClause};
 use synstructure::{BindingInfo, Structure, VariantInfo};
 
@@ -209,7 +203,7 @@ fn derive_variant_fields_expr(
     let mut iter = bindings
         .iter()
         .filter_map(|binding| {
-            let attrs = cg::parse_field_attrs::<CssFieldAttrs>(binding.ast());
+            let attrs = cg::parse_field_attrs::<CssFieldAttrs>(&binding.ast());
             if attrs.skip {
                 return None;
             }