fix: remove the unused menu-item-background-hover variable
fix: remove the unused menu-item-background-hover variable

DaSchTour/foundation-sites,atmmarketing/foundation-sites,abdullahsalem/foundation-sites,zurb/foundation-sites,colin-marshall/foundation-sites,DaSchTour/foundation-sites,zurb/foundation-sites,denisahac/foundation-sites,atmmarketing/foundation-sites,abdullahsalem/foundation-sites,colin-marshall/foundation-sites,zurb/foundation-sites,abdullahsalem/foundation-sites,zurb/foundation,denisahac/foundation-sites,colin-marshall/foundation-sites,zurb/foundation,denisahac/foundation-sites,zurb/foundation,atmmarketing/foundation-sites