chore(docs): Remove outdated examples and recipes

[LekoArts]

Description

Continuation of PRs like #36268 and #36089

Explanations of docs removals:

• Recipe "Deploying your site": Since it doesn't highlight the best place to deploy (Gatsby Cloud) and https://www.gatsbyjs.com/docs/how-to/previews-deploys-hosting/ is a better overview
• Styling CSS: https://www.gatsbyjs.com/docs/how-to/styling/ is the better overview
• Transforming Data: Outdated gatsby-image usage and the concept itself should be a "conceptual" guide
• Working with Images: Outdated gatsby-image and new gatsby-plugin-image docs do a better job

Explanations of example removals:

• no-trailing-slashes: We have trailingSlash option now
• using-glamor: Deprecated plugin
• Rest: Not linked anywhere anymore

Documentation

Redirects to relevant doc pages will be added