Remove obsolete wp-env configuration from package.json (#58877)

[shreyash3087]

What?

This PR removes obsolete wp-env configuration from the package.json file in the monorepo setup.

fixes #58877

Why?

The wp-env configuration in the package.json file is outdated and no longer necessary for the project. This PR aims to clean up the project by removing these obsolete settings, improving maintainability and reducing clutter in the configuration files.

How?

The obsolete wp-env configuration settings, including 'plugin-dir', 'plugin-name', 'docker-template', 'welcome-logo', and 'welcome-build-command', are removed from the package.json file. Additionally, the referenced 'bin/docker-compose.override.yml.template' file is deleted as it is no longer in use.

Testing Instructions

1. Clone the repository.
2. Checkout to the branch containing this PR.
3. Run npm ci to install dependencies.
4. Run npm run build to build the project.
5. Finally, run npm run env start to start WordPress including Gutenberg.
6. Verify that WordPress and Gutenberg work as expected without the removed wp-env configuration.

Testing Instructions for Keyboard

N/A

Screenshots or screencast

N/A

[github-actions]

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[github-actions]

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Co-authored-by: shreyash3087 <shreyash3087@git.wordpress.org>
Co-authored-by: talldan <talldanwp@git.wordpress.org>
Co-authored-by: lgersman <lgersman@git.wordpress.org>

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[talldan]

Thanks!