/**
 * Remove Product Title From Breadcrumbs
 */
add_filter( 'woocommerce_get_breadcrumb', 'bbloomer_single_product_edit_prod_name_breadcrumbs', 9999, 2 );
 
function bbloomer_single_product_edit_prod_name_breadcrumbs( $crumbs, $breadcrumb ) {
    
   if ( is_product() ) {
      global $product;
      $index = count( $crumbs ) - 1; // product name is always last item
      $value = $crumbs[$index];
      $crumbs[$index][0] = null;
   }
    
   return $crumbs;
}

/**
 * Remove Separators (add custom by css)
 */
add_filter( 'woocommerce_breadcrumb_defaults', 'wcc_change_breadcrumb_delimiter' );
function wcc_change_breadcrumb_delimiter( $defaults ) {
	// Change the breadcrumb delimeter from '/' to null
	$defaults['delimiter'] = null;
	return $defaults;
}