title: Hide "free" orders in WooCommerce orders section from admin panel
body: <p>I have some events that are zero cost (free). But they are getting my orders page really full and confusing.</p>
  
  <p>Now in WooCommmerce orders admin panel, I want to hide all orders which have 0 as Price.</p>
  
  <p>Is there any hook or filter function available to achieve this?</p>