Remove deprecated v2 api from glances

[gjohansson-ST]

Breaking change

Glances v2 api has been deprecated and has now been removed. Upgrade to v3 or higher to continue using the integration

Proposed change

SSIA

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

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Checklist

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[home-assistant]

Hey there @engrbm87, mind taking a look at this pull request as it has been labeled with an integration (glances) you are listed as a code owner for? Thanks!

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[cgarwood]

One minor tweak

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

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