How to remove the end hellip

Add the following code to your child theme's function.php or to a site specific plugin.
function tifd_feedzy_remove_hellip( $content, $feedURL ) {
    $content = str_replace( ' [...]', '', $content );
    return $content;
}
add_filter( 'feedzy_summary_output', 'tifd_feedzy_remove_hellip', 9, 2 );