Fix clippy complaint in iron_sessionstorage copy

iron-sessionstorage/src/backends/signedcookie.rs

@@ -41,7 +41,6 @@ impl RawSession for SignedCookieSession {
             self.unsigned_jar
             .borrow()
             .delta()
-            .into_iter()
             .map(|c| format!("{}", c))
             .collect()
         ));

iron-sessionstorage/src/lib.rs

@@ -49,7 +49,7 @@ pub struct SessionStorage<B: SessionBackend> {
 impl<B: SessionBackend> SessionStorage<B> {
     pub fn new(backend: B) -> Self {
         SessionStorage {
-            backend: backend
+            backend
         }
     }
 }