Comic CPT: remove definition from Jetpack plugin

[monsieur-z]

Proposed changes:

This PR removes the Comic Custom Post Type from the Jetpack plugin.

Note: removing the assets alongside the definition somehow makes the build fail. They'll be removed in a separate PR: #38307

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
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Jetpack product discussion

Project thread: pfwV0U-bF-p2

Does this pull request change what data or activity we track or use?

No.

Testing instructions:

Nothing to test here. The only inclusion of the post definition was already removed here: D155096-code

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WordPress.com Simple site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin, and enable the update/remove-comic-cpt-include branch.

• To test on Simple, run the following command on your sandbox:

  bin/jetpack-downloader test jetpack update/remove-comic-cpt-include
  

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions]

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[coder-karen]

Approved, but wanted to add as well that PR 38307 could be merged into this as the issue with assets is due to the Webpack config file still trying to build the Comic assets (confirmed testing locally). See this line: https://github.com/Automattic/jetpack/blob/trunk/projects/plugins/jetpack/tools/webpack.config.css.js#L164
Removing that should fix the build issue.

[monsieur-z]

Approved, but wanted to add as well that PR 38307 could be merged into this as the issue with assets is due to the Webpack config file still trying to build the Comic assets (confirmed testing locally). See this line: https://github.com/Automattic/jetpack/blob/trunk/projects/plugins/jetpack/tools/webpack.config.css.js#L164 Removing that should fix the build issue.

Good catch, thank you @coder-karen!