Remove DOMContentLoaded Eventlisteners

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

app/assets/javascripts/pages/groups/dependency_proxies/index.js

 import $ from 'jquery';
 import initDependencyProxy from '~/dependency_proxy';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initDependencyProxy();
-});
+initDependencyProxy();
 
-document.addEventListener('DOMContentLoaded', () => {
-  const form = document.querySelector('form.edit_dependency_proxy_group_setting');
-  const toggleInput = $('input.js-project-feature-toggle-input');
+const form = document.querySelector('form.edit_dependency_proxy_group_setting');
+const toggleInput = $('input.js-project-feature-toggle-input');
 
-  if (form && toggleInput) {
-    toggleInput.on('trigger-change', () => {
-      form.submit();
-    });
-  }
-});
+if (form && toggleInput) {
+  toggleInput.on('trigger-change', () => {
+    form.submit();
+  });
+}

ee/app/assets/javascripts/pages/dashboard/index.js

 import PersistentUserCallout from '~/persistent_user_callout';
 
-document.addEventListener('DOMContentLoaded', () => {
-  const callout = document.querySelector('.js-gold-trial-callout');
-  PersistentUserCallout.factory(callout);
-});
+const callout = document.querySelector('.js-gold-trial-callout');
+PersistentUserCallout.factory(callout);

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

 import initIssuesAnalytics from 'ee/issues_analytics';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initIssuesAnalytics();
-});
+initIssuesAnalytics();

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

@@ -4,18 +4,16 @@ import initRoadmap from 'ee/roadmap/roadmap_bundle';
 import initFilteredSearch from '~/pages/search/init_filtered_search';
 import UserCallout from '~/user_callout';
 
-document.addEventListener('DOMContentLoaded', () => {
-  initFilteredSearch({
-    page: 'epics',
-    isGroup: true,
-    isGroupDecendent: true,
-    useDefaultState: false,
-    filteredSearchTokenKeys: FilteredSearchTokenKeysEpics,
-    stateFiltersSelector: '.epics-state-filters',
-  });
-  initEpicCreateApp(true);
-  initRoadmap();
-
-  // eslint-disable-next-line no-new
-  new UserCallout({ className: 'js-epics-limit-callout' });
+initFilteredSearch({
+  page: 'epics',
+  isGroup: true,
+  isGroupDecendent: true,
+  useDefaultState: false,
+  filteredSearchTokenKeys: FilteredSearchTokenKeysEpics,
+  stateFiltersSelector: '.epics-state-filters',
 });
+initEpicCreateApp(true);
+initRoadmap();
+
+// eslint-disable-next-line no-new
+new UserCallout({ className: 'js-epics-limit-callout' });

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

 import storageCounter from 'ee/storage_counter';
 import LinkedTabs from '~/lib/utils/bootstrap_linked_tabs';
 
-document.addEventListener('DOMContentLoaded', () => {
-  if (document.querySelector('#js-storage-counter-app')) {
-    storageCounter();
+if (document.querySelector('#js-storage-counter-app')) {
+  storageCounter();
 
-    // eslint-disable-next-line no-new
-    new LinkedTabs({
-      defaultAction: '#pipelines-quota-tab',
-      parentEl: '.js-storage-tabs',
-      hashedTabs: true,
-    });
-  }
-});
+  // eslint-disable-next-line no-new
+  new LinkedTabs({
+    defaultAction: '#pipelines-quota-tab',
+    parentEl: '.js-storage-tabs',
+    hashedTabs: true,
+  });
+}

ee/app/assets/javascripts/pages/profiles/usage_quotas/index.js

 import storageCounter from 'ee/storage_counter';
 import LinkedTabs from '~/lib/utils/bootstrap_linked_tabs';
 
-document.addEventListener('DOMContentLoaded', () => {
-  if (document.querySelector('#js-storage-counter-app')) {
-    storageCounter();
+if (document.querySelector('#js-storage-counter-app')) {
+  storageCounter();
 
-    // eslint-disable-next-line no-new
-    new LinkedTabs({
-      defaultAction: '#pipelines-quota-tab',
-      parentEl: '.js-storage-tabs',
-      hashedTabs: true,
-    });
-  }
-});
+  // eslint-disable-next-line no-new
+  new LinkedTabs({
+    defaultAction: '#pipelines-quota-tab',
+    parentEl: '.js-storage-tabs',
+    hashedTabs: true,
+  });
+}