Removes specific products from the feed generation process

wppfm_exclude_product_ids_from_feed

// woocommerce product feed manager (www.marketingrobot.com)
// Removes specific products ID's from the feed generation process 
function wppfm_exclude_product_ids_from_feed( $products_queue, $feed_id ) {
   $products_to_exclude = array(
      '20872',
      '20875',
      '20876',
      '20879',
      '20883',
      '20895',
      '20910',
   );

   return array_diff( $products_queue, $products_to_exclude );
}

add_filter( 'wppfm_products_in_feed_queue', 'wppfm_exclude_product_ids_from_feed', 10, 2 );