Remove <p> Paragraph around <img> image in Advanced Custom Field ( ACF ) WYSIWYG editor

function.php

<?php

// In this example we are adding <div> with class Figure around <img>
// If you want to remove <div> just simple delete open/close tag and leave $1 between ''
function img_unautop($pee) {
    $pee = preg_replace('/<p>\\s*?(<a .*?><img.*?><\\/a>|<img.*?>)?\\s*<\\/p>/s', '<div class="figure">$1</div>', $pee);
    return $pee;
}
add_filter( 'acf_the_content', 'img_unautop', 30 );

?>