Hi,
Just go to the theme directory ultimate-pro/inc/structure/content-extensions.php on line no. 281 you will see the below line of code which adds post link to the featured image just remove it and save the file. Also we recommended you to create a child theme for theme code customization. So that the code won’t lost while you update the theme.
$image .= '<a href="' . get_permalink() . '" title="'.the_title( '', '', false ).'">';
Thank you!