Perform any necessary changes to the form values prior to storage. There is no need for this function to actually store the data.
Overrides DisplayPluginBase::submitOptionsForm
public function submitOptionsForm(&$form, &$form_state) {
// It is very important to call the parent function here:
parent::submitOptionsForm($form, $form_state);
switch ($form_state['section']) {
case 'displays':
$form_state['values'][$form_state['section']] = array_filter($form_state['values'][$form_state['section']]);
case 'inherit_arguments':
case 'inherit_pager':
case 'render_pager':
case 'inherit_exposed_filters':
case 'attachment_position':
$this
->setOption($form_state['section'], $form_state['values'][$form_state['section']]);
break;
}
}