Removed unused useFeatureFlag and withFeatureFlag hook from stats app

[cmraible]

This is dead code that isn't used anywhere. If we have a need to gate a particular route based on a feature flag, we can re-introduce these hooks, but with a new name ideally as it's not what I'd expect useFeatureFlag to do.

Got some code for us? Awesome 🎊!

Please take a minute to explain the change you're making:

• Why are you making it?
• What does it do?
• Why is this something Ghost users or developers need?

Please check your PR against these items:

• I've read and followed the Contributor Guide
• I've explained my change
• I've written an automated test to prove my change works

We appreciate your contribution! 🙏

[coderabbitai]

Walkthrough

This pull request removes the feature-flag infrastructure from the stats module. Two custom hooks—useFeatureFlag and withFeatureFlag—have been deleted along with their corresponding test files. Additionally, commented-out code related to feature-flag wrapping in the routes configuration has been removed. These changes eliminate the feature-flag gating logic and redirect handling previously present in the codebase. No runtime behavior changes are introduced; only infrastructure removal occurs.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately and clearly describes the main change: removing the unused useFeatureFlag and withFeatureFlag hooks from the stats app.
Description check	✅ Passed	The description explains why the change is made (dead code not used anywhere) and provides context for future re-introduction, which is directly related to the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}