Remove inheriting from object when creating classes with type()

Just as

```py
class A(object): pass
```

is re-written as

```py
class A: pass
```

, so should

```py
A = type("A", (object,), {})
```

be re-written as

```py
A = type("A", (), {})
```

See https://github.com/python/cpython/pull/19553