Remove Jetpack Related Posts from Woo Testimonials

functions.php

<?php
/**
 * Remove Jetpack Related Posts from Woo Testimonials shortcode
 * 
 * @see http://jetpack.me/support/related-posts/customize-related-posts/#delete
 *
 * @param  string $content
 * @return string $content
 */
function sha_jetpackme_remove_rp( $content ) {
    
    // Get the Jetpack Related Posts instance
    $jprp = Jetpack_RelatedPosts::init();
    $callback = array( $jprp, 'filter_add_target_to_dom' );
    
    // Only remove it from the woo_testimonials the_content filter
    if ( 'testimonial' === get_post_type() ) {
        remove_filter( 'the_content', $callback, 40 );
    }
    
    return $content;
}
add_filter( 'the_content', 'sha_jetpackme_remove_rp', 20 );