Remove backorder with snippet code

Hi,

Please check this image >> https://ibb.co/0ZddWT0
How can I get rid of “Backorder sections” completely?

I also tried below snippet codes. But not fixed for all.

add_filter( 'wcfm_product_fields_stock', function( $stock_fields, $product_id, $product_type ) {
	$stock_fields = wcfm_hide_field( 'backorders', $stock_fields );
  return $stock_fields;
}, 50, 3 );

add_filter( 'woocommerce_product_backorders_allowed', '__return_false' );