Remove 'unnamed venue' + unlink venues generally

add_filter( 'tribe_event_pro_meta_venue_name', 'hide_unnamed_venues_from_meta' );

function hide_unnamed_venues_from_meta( $html ) {
    if ( false !== strpos( $html, 'Unnamed Venue' ) ) return '';
    return strip_tags( $html ); // Don't link to the venue
}