Refact: move function to adequate file

[vbuxbaum]

Description:

• Links to issues solved

  466

Pull Request type:

• Refactoring

How to test:

Please provide detailed instructions for testing your changes locally, including expected response/behavior.

Pull Request checklist:

• [x] Read the contributing_to_howdoi.md
• [ ] Attach screenshots of expected behavior.
• [ ] The changes pass tests locally (nose2).
• [ ] There are no linting errors (python setup.py lint).
• [ ] The changes don't break existing features.
• [ ] Check that there are no confidential files like .env included.
• [ ] Request review from the maintainers.
• [ ] For bug fixes or changes to directory structure, make sure docs are updated.

Known bugs (if any):

If there are bugs in your current changes you can still open the PR and mention the bugs you found. Propose further changes that can help fix bugs in your current changes.

[gleitz]

Thanks!!

The checks failed because flake8 is out of date. Will fix in a separate PR.

[gleitz]

Fixed build in https://github.com/gleitz/howdoi/pull/468