[Bug] Complete removal of duplicate CODE_OF_CONDUCT.md from other repositories

[TimidRobot]

Description

Complete removal of duplicate CODE_OF_CONDUCT.md from other repositories

GitHub code search results: org:creativecommons path:CODE_OF_CONDUCT.md

Expectation

Organization-wide file should only exist in one location.

Clean-up commits:

1. https://github.com/creativecommons/attribution-license-plugin/commit/326efea14782fbf90e871c53feb3874f7256afb3
2. creativecommons/candela-utility@08e7386
3. creativecommons/cc-assets@48a3259
4. creativecommons/cc-legal-tools-data@e62b5a1
5. creativecommons/CCID-cas@3bd9dcb
6. creativecommons/CCID-MediaWiki@00246b1
7. creativecommons/ccos-website-source@ce4794b
8. creativecommons/certificates-landing-page-theme@8fd07dc
9. creativecommons/commoners@fbcb0e3
10. creativecommons/creativecommons-base@ddb8f5b
11. creativecommons/data-science-playground@4936f1c
12. creativecommons/licensebuttons@c6a3adb
13. creativecommons/magical-pony@2c0c9cb
14. creativecommons/open4us.org@0b643fb
15. creativecommons/reversionary-rights@5605a0b
16. creativecommons/scholars-addenda@bc940ed
17. creativecommons/search@7f06933
18. creativecommons/sre-wp-pull@04f2c17
19. creativecommons/stateof@4564a0a
20. creativecommons/taaccct@5c29fa4
21. creativecommons/team-open@b199050
22. creativecommons/termination-of-transfer@1aae495
23. creativecommons/the-power-of-open@0e04125
24. creativecommons/wp-plugin-creativecommons-website@a1ebb5a
25. creativecommons/wp-theme-cc-chapter@2d8a00e
26. creativecommons/wp-theme-cc-commoners@3daedb7
27. creativecommons/wp-theme-creativecommons.org@5efaa7f
28. creativecommons/wp-theme-openglam@e822c52
29. creativecommons/wp-theme-summit@3f035b5