[auth] Lint fix

auth/lib/models/account/two_factor.dart

@@ -7,7 +7,5 @@ String twoFactorTypeToString(TwoFactorType type) {
       return "totp";
     case TwoFactorType.passkey:
       return "passkey";
-    default:
-      return type.name;
   }
 }

auth/lib/ui/home_page.dart

@@ -274,7 +274,6 @@ class _HomePageState extends State<HomePage> {
         );
         break;
       case CodeSortKey.manual:
-      default:
         codes.sort((a, b) => a.display.position.compareTo(b.display.position));
         break;
     }