Removes examples that are now duplicative or unnecessary due to new features in 3.0: ### Custom server This one can be removed in favor of [Next.js documentation](https://nextjs.org/docs/pages/building-your-application/configuring/custom-server) ### Hierarchy The new `join` field can solve for many of the use cases for the `hierarchy` example. Bi-directional relationships with the `join` field should be preferred here. ### Nested Docs, Redirects Our website template showcases how to use the `nested-docs` and `redirects` plugins in-depth, with real-world examples. ### Virtual Fields Virtual fields have gotten significantly easier and can now be defined by specifying `virtual: true`. Not a big need for a full example any longer. --------- Co-authored-by: Jacob Fletcher <jacobsfletch@gmail.com>