Delete around_the_library.html and get_random_recent_changes if unused

[scottbarnes]

Problem

We should delete openlibrary/templates/site/around_the_library.html and get_random_recent_changes from openlibrary/plugins/upstream/utils.py if unused.

Breakdown

Requirements Checklist

• Verify the two things above are not called by anything besides perhaps one another by looking at the code (perhaps with the help of git grep).
• IF they are unused, delete the file and function.

Related files

Stakeholders

---

Instructions for Contributors

• Please run these commands to ensure your repository is up to date before creating a new branch to work on this issue and each time after pushing code to Github, because the pre-commit bot may add commits to your PRs upstream.

[JorgeSanchez-Encora]

Hello!, can this issue be assigned to me?

[scottbarnes]

@JorgeSanchez-Encora, I've assigned this to you. Because of the nature of this task, it's a bit hard to demonstrate it had no adverse effects across the entire site, but if you determine these things can be deleted, please explain the steps you took and your rationale in making that determination. Thanks!