app/access-control/controllers/user-accounts-modal-remove.html

<div class="uib-modal__content  modal__local-users-remove">
  <div class="modal-header">
    <h2 class="modal-title" id="dialog_label">
      Remove user
    </h2>
    <button type="button" class="btn  btn--close  float-right" ng-click="$dismiss()" aria-label="Close">
      <icon file="icon-close.svg" aria-hidden="true"></icon>
    </button>
  </div>
  <div class="modal-body">
    <p ng-if="modalCtrl.users.length > 1">Are you sure you want to remove {{modalCtrl.users.length}} users? This action cannot be undone.</p>
    <p ng-if="modalCtrl.users.length === 1">Are you sure you want to remove user '{{modalCtrl.users[0].UserName}}'? This action cannot be undone.</p>
  </div>
  <div class="modal-footer">
    <button class="btn btn-secondary" ng-click="$dismiss()" type="button">
      Cancel
    </button>
    <button class="btn btn-primary" ng-click="$close()" type="button">
      Remove
    </button>
  </div>
</div>