Default options form that provides the label widget that all fields should have.
Overrides FieldPluginBase::buildOptionsForm
public function buildOptionsForm(&$form, &$form_state) {
parent::buildOptionsForm($form, $form_state);
// Remove the checkbox
unset($form['alter']['alter_text']);
unset($form['alter']['text']['#states']);
unset($form['alter']['help']['#states']);
$form['#pre_render'][] = 'views_handler_field_custom_pre_render_move_text';
}