chore: remove unused intro code (#65855)

tools/client-plugins/gatsby-remark-node-identity/.lintstagedrc.mjs

@@ -1,4 +0,0 @@
-/* eslint-disable filenames-simple/naming-convention */
-import { createLintStagedConfig } from '@freecodecamp/eslint-config/lintstaged';
-
-export default createLintStagedConfig(import.meta.dirname);

tools/client-plugins/gatsby-remark-node-identity/eslint.config.mjs

@@ -1,13 +0,0 @@
-import { configTypeChecked } from '@freecodecamp/eslint-config/base';
-import globals from 'globals';
-
-export default [
-  ...configTypeChecked,
-  {
-    languageOptions: {
-      globals: {
-        ...globals.node // TODO: migrate to ESM and remove globals
-      }
-    }
-  }
-];

tools/client-plugins/gatsby-remark-node-identity/gatsby-node.js

@@ -1,21 +0,0 @@
-exports.onCreateNode = function remarkNodeIdentityOnCreateNode(
-  { node, reporter, actions },
-  { predicate, identity }
-) {
-  if (typeof predicate !== 'function') {
-    reporter.panic(
-      'Please supply a predicate function to `gatsby-remark-node-identity`'
-    );
-  }
-  if (typeof identity !== 'string' || identity.length === 0) {
-    reporter.panic(
-      '`gatsby-remark-node-identity` requires an identify string to add to nodes ' +
-        'that match the predicate'
-    );
-  }
-  const { createNodeField } = actions;
-  if (predicate(node)) {
-    createNodeField({ node, name: 'nodeIdentity', value: identity });
-  }
-  return node;
-};

tools/client-plugins/gatsby-remark-node-identity/package.json

@@ -1,31 +0,0 @@
-{
-  "name": "@freecodecamp/gatsby-remark-node-identity",
-  "version": "0.0.1",
-  "description": "The freeCodeCamp.org open-source codebase and curriculum",
-  "license": "BSD-3-Clause",
-  "private": true,
-  "engines": {
-    "node": ">=24",
-    "pnpm": ">=10"
-  },
-  "scripts": {
-    "lint": "eslint --max-warnings 0"
-  },
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/freeCodeCamp/freeCodeCamp.git"
-  },
-  "bugs": {
-    "url": "https://github.com/freeCodeCamp/freeCodeCamp/issues"
-  },
-  "homepage": "https://github.com/freeCodeCamp/freeCodeCamp#readme",
-  "author": "freeCodeCamp <team@freecodecamp.org>",
-  "main": "gatsby-node.js",
-  "peerDependencies": {
-    "gatsby": "^5.0.0"
-  },
-  "devDependencies": {
-    "@freecodecamp/eslint-config": "workspace:*",
-    "eslint": "^9.39.1"
-  }
-}