diff --git a/src/attr.rs b/src/attr.rs
index 0613490aa3..4983b160f3 100644
--- a/src/attr.rs
+++ b/src/attr.rs
@@ -533,15 +533,6 @@ pub mod parsing {
         })
     }
 
-    #[cfg(feature = "full")]
-    impl private {
-        pub(crate) fn attrs(outer: Vec<Attribute>, inner: Vec<Attribute>) -> Vec<Attribute> {
-            let mut attrs = outer;
-            attrs.extend(inner);
-            attrs
-        }
-    }
-
     // Like Path::parse_mod_style but accepts keywords in the path.
     fn parse_meta_path(input: ParseStream) -> Result<Path> {
         Ok(Path {