refactor(nuxt): remove vue-meta for head support

[harlan-zw]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Originally it seemed like multiple head providers were going to be supported, however with the 3.0 release it seems safe to presume that vue-meta won't be supported in the core anytime soon.

This PR removes vue-meta code, it doesn't introduce any breaking changes (afaik) as there was no way to actually switch to using vue-meta.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

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[vercel]

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[pi0]

Thanks!