diff --git a/components/style/dom.rs b/components/style/dom.rs
index 9ef067e76f2..f9e6c251485 100644
--- a/components/style/dom.rs
+++ b/components/style/dom.rs
@@ -19,7 +19,7 @@ use crate::shared_lock::{Locked, SharedRwLock};
 use crate::stylist::CascadeData;
 use crate::values::computed::Display;
 use crate::values::AtomIdent;
-use crate::{LocalName, Namespace, WeakAtom};
+use crate::WeakAtom;
 use atomic_refcell::{AtomicRef, AtomicRefMut};
 use selectors::matching::{QuirksMode, VisitedHandlingMode};
 use selectors::sink::Push;
@@ -512,9 +512,6 @@ pub trait TElement:
     /// Get this element's state, for non-tree-structural pseudos.
     fn state(&self) -> ElementState;
 
-    /// Whether this element has an attribute with a given namespace.
-    fn has_attr(&self, namespace: &Namespace, attr: &LocalName) -> bool;
-
     /// Returns whether this element has a `part` attribute.
     fn has_part_attr(&self) -> bool;
 
diff --git a/components/style/gecko/wrapper.rs b/components/style/gecko/wrapper.rs
index 9616a5f2753..98b5de4f44c 100644
--- a/components/style/gecko/wrapper.rs
+++ b/components/style/gecko/wrapper.rs
@@ -1176,11 +1176,6 @@ impl<'le> TElement for GeckoElement<'le> {
         ElementState::from_bits_truncate(self.state_internal())
     }
 
-    #[inline]
-    fn has_attr(&self, namespace: &Namespace, attr: &AtomIdent) -> bool {
-        unsafe { bindings::Gecko_HasAttr(self.0, namespace.0.as_ptr(), attr.as_ptr()) }
-    }
-
     #[inline]
     fn has_part_attr(&self) -> bool {
         self.as_node()