Pagination: Previous link on the second page shall not display page number in link

[eluser]indapublic[/eluser]

Code:

private function __pagination($config) {
        $pagination_config = array(
            'base_url' => $myurl,
            'uri_segment' => $this->uri->total_segments(),
            'total_rows' => $config['total_rows'],
            'per_page' => $config['per_page'],
            'use_page_numbers' => TRUE,
            'page_query_string' => FALSE,
            'num_links' => 2,
            'query_string_segment' => 'page',
            'display_pages' => TRUE,
            'full_tag_open' => '<span class="label">Pages:</span><ul>',
            'full_tag_close' => '</ul>',
            'first_link' => FALSE,
            'first_tag_open' => FALSE,
            'first_tag_close' => FALSE,
            'last_link' => FALSE,
            'last_tag_open' => FALSE,
            'last_tag_close' => FALSE,
            'next_link' => '<span>next</span>&nbsp;→',
            'next_tag_open' => '<li class="arrow">',
            'next_tag_close' => '</li>',
            'prev_link' => '<span>←&nbsp;previous</span>',
            'prev_tag_open' => '<li class="arrow">',
            'prev_tag_close' => '</li>',
            'cur_tag_open' => '<li class="active"><span>',
            'cur_tag_close' => '</span></li>',
            'num_tag_open' => '<li>',
            'num_tag_close' => '</li>'
        );
        $this->load->library('pagination');
        $this->pagination->initialize($pagination_config);
        return $this->pagination->create_links();
    }