refactor: remove unused mixins

[preschian]

Thank you for your contribution to the KodaDot - One Stop Shop for Polkadot NFTs.

👇 __ Let's make a quick check before the contribution.

PR Type

• Bugfix
• Feature
• Refactoring

Context

• seems like this mixins are unused

Copilot Summary

🤖 Generated by Copilot at f46e8bf

Removed unused or obsolete mixins from utils/mixins folder. Simplified and refactored code that depended on these mixins.

🤖 Generated by Copilot at f46e8bf

is_valid checks
refactored for clarity
autumn leaves falling

[netlify]

✅ Deploy Preview for koda-canary ready!

Name	Link
🔨 Latest commit	8e878ad
🔍 Latest deploy log	https://app.netlify.com/sites/koda-canary/deploys/64a6747b675bca0008ba6d8c
😎 Deploy Preview	https://deploy-preview-6405--koda-canary.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[reviewpad]

AI-Generated Summary: This pull request includes a refactoring process, specifically the removal of unused mixins. The changes impact five files: createdAtMixin.ts, extrinsicsMixin.ts, passionListMixin.ts, queryMixin.ts, and singleSubscribeMixin.ts from the utils/mixins directory. The deletion of these files significantly reduces code clutter by removing a large quantity of unused code (291 lines), leading to speeding up code execution and reducing the possibility of bugs.

[reviewpad]

Reviewpad Report

⚠️ Warnings

• Please link an issue to the pull request

[roiLeo]

✅ code lgtm, none are used

[codeclimate]

Code Climate has analyzed commit 8e878ad and detected 0 issues on this pull request.

View more on Code Climate.