Remove invalid watts sensor from NUT

[tdfountain]

Proposed change

Remove the "watts" sensor since it is invalid. This appears like a breaking change, but is not actually a breaking change. NUT variables are based on RFC 9271 available at https://www.rfc-editor.org/info/rfc9271 with a complete list of num names at https://github.com/networkupstools/nut/blob/master/docs/nut-names.txt. These variables generally take the form of x.y. The variable name "watts" is not a valid variable name. The sensor is therefore invalid and cannot be used. This PR removes the sensor from sensor.py and the translation from strings.json. It is not listed in icons.json. There are no test cases that reference this invalid sensor.

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)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

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• This PR fixes or closes issue: fixes #
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Hey there @bdraco, @ollo69, @pestevez, mind taking a look at this pull request as it has been labeled with an integration (nut) you are listed as a code owner for? Thanks!

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[bdraco]

Thanks @tdfountain

[bdraco]

Looks like this was added in #55491

I agree based on above that it appears to be invalid. However it seems like the user who opened the PR was able to get it to work with their device so I'm not sure we should remove it.

Pending discussion in #140334 (comment)

[tdfountain]

@wranglatang, I proposed at PR to remove the "watt" NUT variable as a separate sensor. Can you please shed light on whether you made this sensor work, and if so, how? Thanks for your help and contribution! We want to make sure not to remove functionality that users are dependent upon.

The NUT documentation does not list "watt" as a valid variable. The naming format is inconsistent with other NUT variables (which are generally x.y). Finally, I reviewed the NUT source code and I am unable find any instances of the "watt" variable from any device driver.

[bdraco]

Based on the information above, I can't see how this sensor could ever work. We haven't heard back from the original submitter though so I am going to give them a bit more time before merging

[frenck]

Meanswhile, there is a merge conflict. Could you take a look @tdfountain?

Thanks! 👍

../Frenck

[tdfountain]

Please see PR #141401. My apologies, I inadvertently closed the branch when committing the merge.