Published on / Update on PHP

Hey

I saw in an old post a snipper of php that changed the element header to show Published on, updated On.

Works a treat, the only side effect is now all my posts have the created date as the first line of the body - how can I remove/hide that

function db_modified_time_stamp( $output, $time_string ) {
        $time_string = '<time class="entry-date published" datetime="%1$s" itemprop="datePublished">Published on %2$s</time> ';

    if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
       	$time_string = '<time class="updated" datetime="%3$s" itemprop="dateModified">Updated on %4$s</time> ' . $time_string;
    }
	
	// get modified time and published time. Compare the two, If modified date exists then ouput both time strings with modified date
	$updated_time = get_the_modified_time( 'U' );
    $published_time = get_the_time( 'U' ) + 86400;
    
    if ( $updated_time > $published_time ) {
        $time_string = '<time class="entry-date updated-date" datetime="%3$s" itemprop="dateModified" style="display:inline;">Updated on %4$s</time>';
    }

        $time_string = sprintf( $time_string,
            esc_attr( get_the_date( 'c' ) ),
            esc_html( get_the_date('F j, Y') ),
            esc_attr( get_the_modified_date( 'c' ) ),
            esc_html( get_the_modified_date('F j, Y') )
        );

        return sprintf( '<span class="posted-on">%1$s</span>', // WPCS: XSS ok, sanitization ok.
            sprintf( '<a href="%1$s" title="%2$s" rel="bookmark">%3$s</a>',
                esc_url( get_permalink() ),
                esc_attr( get_the_time() ),
                $time_string
            )
        );
}

add_shortcode( 'hero_date','db_modified_time_stamp' );

https://share.getcloudapp.com/DOu2EZNA