fix: clean SmoothScroll events when destroyed
fix: clean SmoothScroll events when destroyed

abdullahsalem/foundation-sites,abdullahsalem/foundation-sites,denisahac/foundation-sites,zurb/foundation,zurb/foundation,zurb/foundation-sites,denisahac/foundation-sites,zurb/foundation-sites,denisahac/foundation-sites,zurb/foundation-sites,DaSchTour/foundation-sites,zurb/foundation,DaSchTour/foundation-sites,abdullahsalem/foundation-sites