docs: clean up other addon-docs implementation

Author: chriskrycho

config/addon-docs.js

@@ -85,8 +85,6 @@
     "commitlint-azure-pipelines-cli": "1.0.3",
     "conventional-changelog-cli": "2.1.1",
     "ember-cli": "3.22.0",
-    "ember-cli-addon-docs": "ember-learn/ember-cli-addon-docs#b180220",
-    "ember-cli-addon-docs-esdoc": "0.2.3",
     "ember-cli-app-version": "4.0.0",
     "ember-cli-babel": "7.23.0",
     "ember-cli-blueprint-test-helpers": "0.19.2",

package.json

@@ -44,8 +44,6 @@ module.exports = function (environment) {
   }
 
   if (environment === 'production') {
-    // Allow ember-cli-addon-docs to update the rootURL in compiled assets
-    ENV.rootURL = 'ADDON_DOCS_ROOT_URL';
     // here you can enable a production-specific feature
   }