openproject/public/templates/work_packages/tabs/watchers.html

<div class="detail-panel-content">
  <div class="detail-panel-watchers">
    <ul>
      <li ng-repeat="watcher in watchers">
        <user-field user="watcher"></user-field>
        <icon-wrapper icon-name="close"
                      icon-title="{{I18n.t('js.button_delete_watcher')}}"
                      class="detail-panel-watchers-delete-watcher-icon"
                      ng-if="watcher.links.removeWatcher"
                      ng-click="deleteWatcher(watcher)"></icon-wrapper>
      </li>
    </ul>
  </div>
</div>