Form submission handler for the 'delete' action.
array $form: An associative array containing the structure of the form.
array $form_state: A reference to a keyed array containing the current state of the form.
Overrides EntityFormController::delete
public function delete(array $form, array &$form_state) {
$form_state['redirect'] = 'admin/people/roles/manage/' . $this->entity
->id() . '/delete';
}