chore: remove netlify-plugin-cypress

[MikeMcC399]

This PR removes the npm module netlify-plugin-cypress from this repo.

• Closes Installation deprecations caused by netlify-plugin-cypress #708

Issues

Following the README > Help + Testing instructions to execute

npm install

causes supportability and vulnerability issues:

1. The netlify-plugin-cypress uses an unsupported version of the npm module puppeteer 18.1.0. The minimum supported version of puppeteer is however 21.8.0:

   $ npm show puppeteer@18.1.0 deprecated
   < 21.8.0 is no longer supported

2. npm audit identifies multiple security vulnerabilities that can be traced back to dependencies of netlify-plugin-cypress. These vulnerabilities can not be remediated with a simple npm audit fix
   • @koa/cors <5.0.0 Severity: high
   • debug 4.0.0 - 4.3.0
   • got <11.8.5 Severity: moderate

Situation

• netlify-plugin-cypress@2.2.1 is the latest available version and it was published a little more than one year ago on Feb 23, 2023.
• Issue npm WARN deprecated puppeteer@18.1.0: < 21.8.0 is no longer supported netlify-plugin-cypress#336 has been unresolved for almost one year and there are no indications that it will be resolved.

Changes

The following changes are made to resolve the issues listed above:

• netlify-plugin-cypress@2.2.1 is removed.
• The Netlify config file netlify.toml is removed.
• References to netlify-plugin-cypress are removed from the README file.

The change only affects the demonstration of netlify-plugin-cypress as a CI function. It does not affect the use of the repo contents for scaffolding examples in Cypress.

[cypress-app-bot]

• Create a Draft Pull Request if your PR is not ready for review. Mark the PR as Ready for Review when you're ready for a Cypress team member to review the PR.

[MikeMcC399]

The repo would also need to be disabled on https://app.netlify.com/sites/cypress-example-kitchensink before merging this PR. I don't have any write access to these settings.

[cypress-app-bot]

🎉 This PR is included in version 2.0.5 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀