Remove duplicate call to hugo.Generator

[JannikArndt]

Currently, the theme adds the

<meta name="generator" content="Hugo 0.92.1" />

tag to every page (source: https://github.com/adityatelange/hugo-PaperMod/blob/master/layouts/partials/head.html#L107-L108).

Problems with this:

1. it doesn't respect the disableHugoGeneratorInject setting
2. it differs from the intention of the tag, which is to only appear on the main page (see documentation here and comment by bep here)

The solution is really simple: For some versions now, the theme doesn't have to add the tag anymore. If it's not present, hugo will just add it (if disableHugoGeneratorInject isn't true). So removing this code and using the latest version of hugo gives you the intended behaviour.

PR Checklist

• This change adds/updates translations and I have used the template present here.
• I have enabled maintainer edits for this PR.
• I have verified that the code works as described/as intended.
• This change adds a Social Icon which has a permissive license to use it.
• This change does not include any CDN resources/links.
• This change does not include any unrelated scripts such as bash and python scripts.
• This change updates the overridden internal templates from HUGO's repository.

[sonarcloud]

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