Remove exception printing when importing phonopy

[lan496]

Summary

Removes stdout printing when trying to import phonopy for tidiness. These printing appeared in some downstream packages. For example

pip install mp_api
python -c "from mp_api.client import MPRester"

resulted in

No module named 'phonopy'
No module named 'phonopy'

Checklist

• Google format doc strings added. Check with ruff.
• Type annotations included. Check with mypy.
• Tests added for new features/fixes.
• If applicable, new classes/functions/modules have duecredit @due.dcite decorators to reference relevant papers by DOI (example)

Tip: Install pre-commit hooks to auto-check types and linting before every commit:

pip install -U pre-commit
pre-commit install

[lan496]

The CI jobs seem to be failed due to network timeouts.

• https://github.com/materialsproject/pymatgen/actions/runs/8336717393/job/22814307503?pr=3696
• https://github.com/materialsproject/pymatgen/actions/runs/8336717393/job/22814308207?pr=3696

[janosh]

thanks @lan496.

The CI jobs seem to be failed due to network timeouts.

should be fixed by 2dbe219