remove redundant clones

compiler/rustc_parse/src/parser/attr_wrapper.rs

@@ -52,7 +52,7 @@ pub(crate) fn take_for_recovery(self) -> AttrVec {
     // Prepend `self.attrs` to `attrs`.
     // FIXME: require passing an NT to prevent misuse of this method
     pub(crate) fn prepend_to_nt_inner(self, attrs: &mut AttrVec) {
-        let mut self_attrs = self.attrs.clone();
+        let mut self_attrs = self.attrs;
         std::mem::swap(attrs, &mut self_attrs);
         attrs.extend(self_attrs);
     }

src/librustdoc/json/conversions.rs

@@ -486,7 +486,7 @@ fn from_tcx(ty: clean::Type, tcx: TyCtxt<'_>) -> Self {
             },
             QPath(box clean::QPathData { assoc, self_type, trait_, .. }) => Type::QualifiedPath {
                 name: assoc.name.to_string(),
-                args: Box::new(assoc.args.clone().into_tcx(tcx)),
+                args: Box::new(assoc.args.into_tcx(tcx)),
                 self_type: Box::new(self_type.into_tcx(tcx)),
                 trait_: trait_.into_tcx(tcx),
             },