Eliminate the second date

// Find this chunk of code (in events-advanced-list-load-widget-display.php
// - near the top):
if( tribe_is_multiday( $post->ID ) || !$event->AllDay ) {
    echo ' – <br/>'. tribe_get_end_date($post->ID );
}

// Change it to the following (note the extra parameters we are adding to the
// tribe_get_end_date() function ... the single space between the single quotes
// is deliberate)
if( tribe_is_multiday( $post->ID ) || !$event->AllDay ) {
    echo ' – <br/>'. tribe_get_end_date($post->ID, true, ' ' );
}