title: Hide order statuses in dropdown based on order status in WooCommerce edit order page
body: <p>I want to hide order statuses in the WooCommerce order status dropdown under specific scenarios:</p>
  <ul>
  <li>If status is pending payment hide completed</li>
  <li>If status is processing hide pending payment</li>
  </ul>
  <p>I still want to display all these order statuses in the order overview list.</p>
  <p>All I can find is to unset an order status completely:</p>
  <pre class="lang-php prettyprint-override"><code>function so_39252649_remove_processing_status ($statuses) {
      if (isset($statuses['wc-processing'])) {
          unset($statuses['wc-processing']);
      }
      return $statuses;
  }
  add_filter('wc_order_statuses', 'so_39252649_remove_processing_status');
  </code></pre>
  <hr />
  <p>But this will of course also remove it from the order overview list, I just want to hide it in the dropdown on the order edit page, but I cant find a hook for this.</p>
  <p>Is jQuery my only choice for this?</p>