Make clippy happy

crates/fj-kernel/src/algorithms/sweep/sketch.rs

@@ -21,7 +21,7 @@ impl Sweep for (Handle<Sketch>, Handle<Surface>) {
         let path = path.into();
 
         let mut shells = Vec::new();
-        for face in self.0.faces(self.1, services).clone() {
+        for face in self.0.faces(self.1, services) {
             let shell = face.sweep_with_cache(path, cache, services);
             shells.push(shell);
         }

crates/fj-kernel/src/objects/full/face.rs

@@ -62,7 +62,7 @@ impl Face {
 
     /// Access the cycle that bounds the face on the outside
     pub fn exterior(&self) -> &Handle<Cycle> {
-        &self.region.exterior()
+        self.region.exterior()
     }
 
     /// Access the cycles that bound the face on the inside