Remove DOMContentLoaded Eventlisteners

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

ee/app/assets/javascripts/pages/groups/contribution_analytics/show/index.js

 import initContributionAanalyticsCharts from 'ee/analytics/contribution_analytics/contribution_analytics_bundle';
 import initGroupMemberContributions from 'ee/group_member_contributions';
 
-document.addEventListener('DOMContentLoaded', () => {
-  const dataEl = document.getElementById('js-analytics-data');
-  if (dataEl) {
-    initContributionAanalyticsCharts(dataEl);
-    initGroupMemberContributions();
-  }
-});
+const dataEl = document.getElementById('js-analytics-data');
+if (dataEl) {
+  initContributionAanalyticsCharts(dataEl);
+  initGroupMemberContributions();
+}

ee/app/assets/javascripts/pages/groups/edit/index.js

@@ -3,16 +3,14 @@ import initAccessRestrictionField from 'ee/groups/settings/access_restriction_fi
 import validateRestrictedIpAddress from 'ee/groups/settings/access_restriction_field/validate_ip_address';
 import { __ } from '~/locale';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initAccessRestrictionField('.js-allowed-email-domains', {
-    placeholder: __('Enter domain'),
-    regexErrorMessage: __('The domain you entered is misformatted.'),
-    disallowedValueErrorMessage: __('The domain you entered is not allowed.'),
-  });
-  initAccessRestrictionField(
-    '.js-ip-restriction',
-    { placeholder: __('Enter IP address range') },
-    'ip_restriction_field',
-    validateRestrictedIpAddress,
-  );
+initAccessRestrictionField('.js-allowed-email-domains', {
+  placeholder: __('Enter domain'),
+  regexErrorMessage: __('The domain you entered is misformatted.'),
+  disallowedValueErrorMessage: __('The domain you entered is not allowed.'),
 });
+initAccessRestrictionField(
+  '.js-ip-restriction',
+  { placeholder: __('Enter IP address range') },
+  'ip_restriction_field',
+  validateRestrictedIpAddress,
+);

ee/app/assets/javascripts/pages/groups/ldap_group_links/index.js

 import initLDAPGroupsSelect from 'ee/ldap_groups_select';
 import initLDAPGroupLinks from 'ee/groups/ldap_group_links';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initLDAPGroupsSelect();
-  initLDAPGroupLinks();
-});
+initLDAPGroupsSelect();
+initLDAPGroupLinks();

ee/app/assets/javascripts/pages/groups/milestones/show/index.js

@@ -2,7 +2,5 @@ import '~/pages/groups/milestones/show/index';
 import initBurndownChart from 'ee/burndown_chart';
 import UserCallout from '~/user_callout';
 
-document.addEventListener('DOMContentLoaded', () => {
-  new UserCallout(); // eslint-disable-line no-new
-  initBurndownChart();
-});
+new UserCallout(); // eslint-disable-line no-new
+initBurndownChart();

ee/app/assets/javascripts/pages/groups/omniauth_callbacks/index.js

 import { mount2faAuthentication } from '~/authentication/mount_2fa';
 
-document.addEventListener('DOMContentLoaded', mount2faAuthentication);
+mount2faAuthentication();

ee/app/assets/javascripts/pages/groups/sso/index.js

 import UsernameValidator from '~/pages/sessions/new/username_validator';
 import initConfirmDangerModal from '~/confirm_danger_modal';
 
-document.addEventListener('DOMContentLoaded', () => {
-  new UsernameValidator(); // eslint-disable-line no-new
-  initConfirmDangerModal();
-});
+new UsernameValidator(); // eslint-disable-line no-new
+initConfirmDangerModal();