Remove DOMContentLoaded Eventlisteners

Removing DOMContentLoaded Eventlisteners from
index files since the scripts
are embedded using the defer tag.

ee/app/assets/javascripts/pages/admin/application_settings/ci_cd/index.js

 import CiTemplate from './ci_template';
-
-document.addEventListener('DOMContentLoaded', () => new CiTemplate());
+// eslint-disable-next-line no-new
+new CiTemplate();

ee/app/assets/javascripts/pages/admin/application_settings/index.js

@@ -38,13 +38,12 @@ const getDropdownConfig = (placeholder, apiPath, textProp) => ({
   },
 });
 
-document.addEventListener('DOMContentLoaded', () => {
-  groupsSelect();
+groupsSelect();
 
-  // ElasticSearch
-  const $container = $('#js-elasticsearch-settings');
+// ElasticSearch
+const $container = $('#js-elasticsearch-settings');
 
-  $container
+$container
   .find('.js-limit-checkbox')
   .on('change', e =>
     onLimitCheckboxChange(
@@ -54,7 +53,7 @@ document.addEventListener('DOMContentLoaded', () => {
     ),
   );
 
-  $container
+$container
   .find('.js-elasticsearch-namespaces')
   .select2(
     getDropdownConfig(
@@ -64,7 +63,7 @@ document.addEventListener('DOMContentLoaded', () => {
     ),
   );
 
-  $container
+$container
   .find('.js-elasticsearch-projects')
   .select2(
     getDropdownConfig(
@@ -73,4 +72,3 @@ document.addEventListener('DOMContentLoaded', () => {
       'name_with_namespace',
     ),
   );
-});

ee/app/assets/javascripts/pages/admin/application_settings/integrations/index.js

@@ -36,14 +36,13 @@ const getDropdownConfig = (placeholder, url) => ({
   },
 });
 
-document.addEventListener('DOMContentLoaded', () => {
-  const callout = document.querySelector('.js-admin-integrations-moved');
-  PersistentUserCallout.factory(callout);
+const callout = document.querySelector('.js-admin-integrations-moved');
+PersistentUserCallout.factory(callout);
 
-  // ElasticSearch
-  const $container = $('#js-elasticsearch-settings');
+// ElasticSearch
+const $container = $('#js-elasticsearch-settings');
 
-  $container
+$container
   .find('.js-limit-checkbox')
   .on('change', e =>
     onLimitCheckboxChange(
@@ -53,7 +52,7 @@ document.addEventListener('DOMContentLoaded', () => {
     ),
   );
 
-  $container
+$container
   .find('.js-elasticsearch-namespaces')
   .select2(
     getDropdownConfig(
@@ -62,7 +61,7 @@ document.addEventListener('DOMContentLoaded', () => {
     ),
   );
 
-  $container
+$container
   .find('.js-elasticsearch-projects')
   .select2(
     getDropdownConfig(
@@ -70,4 +69,3 @@ document.addEventListener('DOMContentLoaded', () => {
       '/-/autocomplete/project_routes.json',
     ),
   );
-});

ee/app/assets/javascripts/pages/admin/emails/show/index.js

 import AdminEmailSelect from './admin_email_select';
 
-document.addEventListener('DOMContentLoaded', () => {
-  AdminEmailSelect();
-});
+AdminEmailSelect();

ee/app/assets/javascripts/pages/admin/geo/settings/index.js

 import initGeoSettingsForm from 'ee/geo_settings';
 
-document.addEventListener('DOMContentLoaded', initGeoSettingsForm);
+initGeoSettingsForm();

ee/app/assets/javascripts/pages/groups/epics/new/index.js

 import { initEpicForm } from 'ee/epic/new_epic_bundle';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initEpicForm();
-});
+initEpicForm();