Remove repository specific Code of Conduct. (#59027)

This removes the repository specific `CODE_OF_CONDUCT.md` file in favor of the newly added version maintained as the organization's default within the WordPress/.github repository.

While this file will not be included in `git clone`s, this change enables more consistent messaging for the community code of conduct, and allows the file to be updated in one location for all repositories under the WordPress organization.

Co-authored-by: desrosj <[email protected]>
Co-authored-by: alexstine <[email protected]>
Co-authored-by: angelasjin <[email protected]>

Author: 3 people

.github/SUPPORT.md

@@ -5,7 +5,7 @@ Welcome to Gutenberg, a WordPress project. We hope you join us in creating the f
 
 * Please see the [Contributing Guidelines](https://github.com/WordPress/gutenberg/blob/HEAD/CONTRIBUTING.md) for additional information on how to contribute.
 
-* As with all WordPress projects, we want to ensure a welcoming environment for everyone. With that in mind, all contributors are expected to follow our [Code of Conduct](https://github.com/WordPress/gutenberg/blob/HEAD/CODE_OF_CONDUCT.md).
+* As with all WordPress projects, we want to ensure a welcoming environment for everyone. With that in mind, all contributors are expected to follow our [Code of Conduct](https://make.wordpress.org/handbook/community-code-of-conduct/).
 
 * Join us on Slack for real-time communication, it is where maintainers coordinate around the project. To get started using Slack, see: https://make.wordpress.org/chat/
 

CODE_OF_CONDUCT.md

@@ -16,7 +16,7 @@ To learn all about contributing to the Gutenberg project, see the [Contributor G
 
 ## Guidelines
 
--   As with all WordPress projects, we want to ensure a welcoming environment for everyone. With that in mind, all contributors are expected to follow our [Code of Conduct](/CODE_OF_CONDUCT.md).
+-   As with all WordPress projects, we want to ensure a welcoming environment for everyone. With that in mind, all contributors are expected to follow our [Code of Conduct](https://make.wordpress.org/handbook/community-code-of-conduct/).
 
 -   Contributors should review the [overall process and best practices for pull requests](https://github.com/WordPress/gutenberg/blob/trunk/docs/contributors/repository-management.md#pull-requests), adhering to WordPress' [JavaScript coding standards](https://developer.wordpress.org/coding-standards/wordpress-coding-standards/javascript/) and [accessibility coding standards](https://developer.wordpress.org/coding-standards/wordpress-coding-standards/accessibility/).
 

CONTRIBUTING.md

@@ -49,7 +49,7 @@ To get up and running quickly with **code contribution** see [Getting Started Wi
 
 In whichever way you wish to contribute please be sure to read the [Contributing Guidelines](https://github.com/WordPress/gutenberg/blob/HEAD/CONTRIBUTING.md) first.
 
-As with all WordPress projects, we want to ensure a welcoming environment for everyone. With that in mind, all contributors are expected to follow our [Code of Conduct](https://github.com/WordPress/gutenberg/blob/HEAD/CODE_OF_CONDUCT.md).
+As with all WordPress projects, we want to ensure a welcoming environment for everyone. With that in mind, all contributors are expected to follow our [Code of Conduct](https://make.wordpress.org/handbook/community-code-of-conduct/).
 
 ## Get Involved