docs: remove unused code

[kilisei]

❓ Type of change

• [x] 📖 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

Remove t because we use $t in for the translation and t would be useless

📝 Checklist

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

[nuxt-studio[bot]]

✅ Live Preview ready!

Name	Edit	Preview	Latest Commit
i18n	Edit on Studio ↗︎	View Live Preview	6fd9a2508967e4cac7b8fd889e5dd9657eba735e

[kazupon]

Ah, This PR has conflicted other PR commit. 😅 Could you resolve it in your PR! 🙏