Upgrade ni-python-styleguide to version 0.4.1

[bkeryan]

• This contribution adheres to CONTRIBUTING.md.

What does this Pull Request accomplish?

Update ni-python-styleguide to version 0.4.1.

Fix syntax of noqa comments. To ignore a specific error, you must put a colon after noqa, or else it ignores all errors.

Fix import order in __init__.py.

Remove docstrings from test case functions.

Why should this Pull Request be merged?

Fixes #250

Removes boilerplate docstrings from tests.

What testing has been done?

Ran ni-python-styleguide lint and pytest.

[bkeryan]

@mshafer-NI I tried to fix the noqa comments by removing them and then running acknowledge-existing-violations, but this didn't work out: ni/python-styleguide#125

[mshafer-NI]

@mshafer-NI I tried to fix the noqa comments by removing them and then running acknowledge-existing-violations, but this didn't work out: ni/python-styleguide#125

@bkeryan
Please try again using 0.4.1

[bkeryan]

@mshafer-NI I tried to fix the noqa comments by removing them and then running acknowledge-existing-violations, but this didn't work out: ni/python-styleguide#125

@bkeryan Please try again using 0.4.1

I upgraded to 0.4.1 before I tried to do this.

I didn't know about fix --aggressive. I'll try that.

[bkeryan]

I didn't know about fix --aggressive. I'll try that.

ni/python-styleguide#129

[bkeryan]

checks-nimg was failing for two reasons:

• I forgot to upgrade ni-python-styleguide in the generator's pyproject.toml.
• It wasn't following the standard test directory structure (tests/acceptance/test_.py, tests/unit/tests_.py, etc.) so the exclusion didn't work.