Ciao,
dovrebbe essere questo:
nel file /templates/gk_twn2/css/layout.css
hai questo:
@media print{*,:before,:after{color:#000!important;text-shadow:none!important;background:transparent!important;-webkit-box-shadow:none!important;box-shadow:none!important}a,a:visited{text-decoration:underline}a[href]:after{content:" (" attr(href) ")"}abbr[title]:after{content:" (" attr(title) ")"}a[href^="#"]:after,a[href^="javascript:"]:after{content:""}pre,blockquote{border:1px solid #999;page-break-inside:avoid}thead{display:table-header-group}tr,img{page-break-inside:avoid}img{max-width:100%!important}p,h2,h3{orphans:3;widows:3}h2,h3{page-break-after:avoid}
prova a fare un override con:
@media print {
a[href]:after {
content: none !important;
}
}