chore: remove vestigial commitizen references (#7317)

Author: bmuenzenmeyer

CONTRIBUTING.md

@@ -115,7 +115,7 @@ for getting things done and landing your contribution.
     ```bash
     cd ~/nodejs.org
     git add .
-    git commit #let commitizen handle the commit
+    git commit -m "describe your changes"
     git push -u origin name-of-your-branch
     ```
 

README.md

@@ -30,9 +30,6 @@
   <a title="scorecard" href="https://securityscorecards.dev/viewer/?uri=github.com/nodejs/nodejs.org">
     <img src="https://api.securityscorecards.dev/projects/github.com/nodejs/nodejs.org/badge" alt="nodejs.org scorecard badge" />
   </a>
-  <a href="http://commitizen.github.io/cz-cli/" alt="Commitizen friendly">
-    <img src="https://img.shields.io/badge/commitizen-friendly-brightgreen.svg">
-  </a>
   <br />
   <br />
 </p>

package-lock.json

@@ -43,7 +43,6 @@
     "@eslint/js": "~9.16.0",
     "@types/eslint__js": "8.42.3",
     "@types/node": "22.10.1",
-    "commitizen": "4.3.1",
     "cz-conventional-changelog": "3.3.0",
     "eslint": "~9.16.0",
     "eslint-plugin-import-x": "~4.4.3",