Não consigo tirar a imagem destacada do post.

Ja pesquisei durante 4 dias e não acho uma solução para tirar a imagem destacada ná pagina do post em meu tema. No arquivo single.php não existe a linha de código que é dito para trocar. Esse é o código que aparece na minha página do single.php:

<?php
get_header();

?>

<?php get_template_part(‘functions/title’); //Setup the Titlebar ?>

<div class=”page-content”>
<div class=”row clearfix”>

<?php $blog_sidebar = _option(‘blog_sidebar’,’right’);?>

<div class=”grid_8 posts post-sidebar-<?php echo esc_attr($blog_sidebar); ?>”>

<?php if (have_posts()) : while (have_posts()) : the_post(); ?>

<?php get_template_part( ‘functions/post-format/single’, get_post_format() ); ?>

<?php endwhile; ?>

<?php else : ?>

<h3><?php _e(‘Not Found’, ‘official’) ?></h3>

<?php endif; ?>

<?php
wp_link_pages(array(
‘before’ => ‘<div class=”pagination pages mbs mts”><span>’. __(‘Pages: ‘,’official’) .'</span>’,
‘after’ => ‘</div>’ ,
‘next_or_number’ => ‘number’,
‘link_before’ => ‘<span>’,
‘link_after’ => ‘</span>’,
));
?>

<?php $bef='<div class=”post-tags tags mtt mbf”><span>’. __(‘Tags: ‘,’official’).'</span>’; ?>
<?php the_tags($bef,’ ‘,'</div>’); ?>

<?php if(_option(‘author_info’) == 1): ?>
<div class=”author-box”>
<?php echo get_avatar( get_the_author_meta(‘user_email’), ‘130’, ” ); ?>
<div class=”author-details”>
<h3> <?php the_author_link(); ?> <small> – author </small></h3>
<p><?php the_author_meta(“description”); ?></p>
</div>
</div><!– author –>
<?php endif; ?>

<?php if(_option(‘blog_share’,1) == 1) { ?>
<?php get_template_part( ‘functions/share’ ); ?>
<?php } ?>

<?php if (_option(‘blog_comment’)==1):?>
<div class=”comments”><?php comments_template(); ?></div>
<?php endif; ?>

</div><!– grid 8 posts –>

<?php if ($blog_sidebar==’left’): ?>
<!– start sidebar –>
<div class=”grid_4 sidebar alpha sidebar-left”>

<?php

if ( ! dynamic_sidebar ( ‘sidebar-blog’ ) ){
thdglkr_emptysidebar(‘Blog’);
}
?>

</div><!– grid 4 Sidebar –>
<?php endif; ?>

<?php if ($blog_sidebar==’right’): ?>
<!– start sidebar –>
<div class=”grid_4 sidebar omega”>

<?php

if ( ! dynamic_sidebar ( ‘sidebar-blog’ ) ){
thdglkr_emptysidebar(‘Blog’);
}
?>

</div><!– grid 4 Sidebar –>
<?php endif; ?>

</div><!– row –>

</div><!– end page content –>

<?php get_footer(); ?>