New rule `del-attr-with-constant`

### Summary

new sibling for [B009](https://docs.astral.sh/ruff/rules/get-attr-with-constant) (`get-attr-with-constant`):

```py
# bad
delattr(cls, "_repr_mimebundle_")

# good
del cls._repr_mimebundle_
```