Remove trailing slashes from event links

function tribe_get_unslashed_event_link() {
    $link = tribe_get_event_link();
    $last_slash = strrpos($link, '/');
    $link_length = strlen($link) - 1;

    if ($last_slash === $link_length) $link = substr($link, 0, $link_length);
    return $link;
}