Merge branch '228972-migrate-related-issues-tooltips' into 'master'

Migrate related issue widget tooltips in vue

See merge request gitlab-org/gitlab!45458

app/assets/javascripts/related_issues/components/related_issues_list.vue

@@ -3,13 +3,9 @@ import { GlLoadingIcon } from '@gitlab/ui';
 import Sortable from 'sortablejs';
 import sortableConfig from 'ee_else_ce/sortable/sortable_config';
 import RelatedIssuableItem from '~/vue_shared/components/issue/related_issuable_item.vue';
-import tooltip from '~/vue_shared/directives/tooltip';
 
 export default {
   name: 'RelatedIssuesList',
-  directives: {
-    tooltip,
-  },
   components: {
     GlLoadingIcon,
     RelatedIssuableItem,