¿Como quito una linea lateral?

<style type="text/css">
<!--
td.edit_below_nav{visibility:hidden;}
td.edit_navi_headbg{background-image:url();}
td.edit_rechts_sbg{visibility:hidden;}
td.edit_rechts_cbg{background-image: url();}
td.edit_rechts_bottom{background-image: url();}
td.edit_below_nav{visibility:hidden;}
td.edit_rechts_sbg{visibility:hidden;}
--></style>