Python version_independent: true still creates Python build matrix

### Conda-forge documentation

- [x] I could not solve my problem using the conda-forge documentation.

### Installed packages

```shell
N/A
```

### Environment info

```shell
N/A
```

### Issue

When using v1 recipe format I can make a Python version independent package, however I still get a Python build matrix unless I am explicitly adding a skip.

````yaml
python:
version_independent: true
skip:
- not is_python_min
````

For the package I am building Python is a true build dependency, no host or run dependency and I want to straight-forwardly opt out from the Python build matrix. Is there a better way than declaring the package as Python version independent and skipping all but the minimal Python version?