Remove MR 1716, it's already merged and part of 8.4
gitlab-org/gitlab-ce!1716 was already merged and was shipped with 8.4, so remove it from the directions page.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
gitlab-org/gitlab-ce!1716 was already merged and was shipped with 8.4, so remove it from the directions page.