Method __delattr__

crates/vm/src/builtins/object.rs:361–363

(obj: PyObjectRef, name: PyStrRef, vm: &VirtualMachine)

    /// Implement delattr(self, name).
    #[pymethod]
    fn __delattr__(obj: PyObjectRef, name: PyStrRef, vm: &VirtualMachine) -> PyResult<()> {
        obj.generic_setattr(&name, PySetterValue::Delete, vm)
    }

    #[pyslot]
    pub(crate) fn slot_setattro(