beta6 still seems to require scheduler

The file node.type.bootstrap_site_alert.yml exported by drush cex includes:

dependencies:
module:
- menu_ui
- scheduler
third_party_settings:
menu_ui:
available_menus: { }
parent: ''
scheduler:
expand_fieldset: when_required
fields_display_mode: vertical_tab
publish_enable: false
publish_past_date: error
publish_required: false
publish_revision: false
publish_touch: false
unpublish_enable: false
unpublish_required: false
unpublish_revision: false

I thought that the dependency on scheduler had been removed?

Thanks.