cs: Same operation, clear remaining todo.

src/Operation/Same.php

@@ -58,12 +58,7 @@ static function (Iterator $iterator) use ($other, $comparatorCallback): Generato
                             $other->next();
                         }
 
-                        // TODO: Use single return line when FriendsOfPHP/PHP-CS-Fixer/issues/5810 is fixed.
-                        if ($iterator->valid() !== $other->valid()) {
-                            return yield false;
-                        }
-
-                        return yield true;
+                        return $iterator->valid() !== $other->valid();
                     };
     }
 }