Remove AttributeDuplicates from BUILTIN_ATTRIBUTES

clippy_lints/src/cognitive_complexity.rs

diff --git a/clippy_lints/src/cognitive_complexity.rs b/clippy_lints/src/cognitive_complexity.rs
index 911ca30..63d9064 100644
--- a/clippy_lints/src/cognitive_complexity.rs
+++ b/clippy_lints/src/cognitive_complexity.rs
@@ -145,7 +145,7 @@
         def_id: LocalDefId,
     ) {
         #[allow(deprecated)]
-        if !cx.tcx.has_attr(def_id, sym::test) {
+        if !cx.tcx.get_attrs(def_id, sym::test).next().is_some() {
             let expr = if kind.asyncness().is_async() {
                 match get_async_fn_body(cx.tcx, body) {
                     Some(b) => b,

clippy_utils/src/lib.rs

diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs
index a8ff9b4..396b638 100644
--- a/clippy_utils/src/lib.rs
+++ b/clippy_utils/src/lib.rs
@@ -2400,8 +2400,7 @@
     if let TyKind::Path(QPath::Resolved(_, path)) = ty.kind
         && let Res::Def(_, def_id) = path.res
     {
-        #[allow(deprecated)]
-        return cx.tcx.has_attr(def_id, sym::cfg) || cx.tcx.has_attr(def_id, sym::cfg_attr);
+        return find_attr!(cx.tcx, def_id, CfgTrace(..) | CfgAttrTrace);
     }
     false
 }