chore: clean up code #1200

Job	Run time
linting-and-style-checks (3.9, black)	25s
linting-and-style-checks (3.9, flake8)	19s
unit-tests (ubuntu-20.04, 3.9, clean,py39-pytest-cov,report)	2m 3s
linting-and-style-checks (3.9, gitlint)	22s
unit-tests (ubuntu-20.04, 3.9, py39-cookiecutter)	27s
linting-and-style-checks (3.9, isort)	13s
unit-tests (ubuntu-20.04, 3.10, clean,py310-pytest-cov,report)	2m 20s
linting-and-style-checks (3.9, mypy)	47s
unit-tests (ubuntu-20.04, 3.10, py310-cookiecutter)	20s
unit-tests (windows-latest, 3.9, clean,py39-pytest-cov,report)	3m 37s
unit-tests (windows-latest, 3.9, py39-cookiecutter)	1m 3s
unit-tests (windows-latest, 3.10, clean,py310-pytest-cov,report)	3m 26s
unit-tests (windows-latest, 3.10, py310-cookiecutter)	1m 3s
	16m 25s

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