Enable pylint unnecessary-pass

[frenck]

Proposed change

This PR enabled the unnecessary-pass Pylint rule.

I realize enabling this might be a little controversial and hit some people's opinions.

However, in the current situation, we would accept both unnecessary passes and without. This would at least make it standardized across the codebase and make it closer towards the "default" Pylint behavior.

Besides empty methods or classes, it also removes quite a few unnecessary passes in e.g., exception handling.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Example entry for configuration.yaml:

# Example configuration.yaml

Additional information

• This PR fixes or closes issue: fixes #
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Checklist

• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• The code has been formatted using Black (black --fast homeassistant tests)
• Tests have been added to verify that the new code works.

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  Updated and included derived files by running: python3 -m script.hassfest.
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  Updated by running python3 -m script.gen_requirements_all.
• Untested files have been added to .coveragerc.

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[springstan]

LGTM 👍

[MartinHjelmare]

Good! Just some additional clean up.

[frenck]

All processed.

[MartinHjelmare]

Thanks!