$(function(){
  $("#clients li").tsort();

  var liText = '', liList = $('#clients li'), listForRemove = [];
  $(liList).each(function(){
    var text = $(this).text();

    if (liText.indexOf('|'+ text + '|') == -1)
      liText += '|'+ text + '|';
    else
      listForRemove.push($(this));
    });
  $(listForRemove).each(function(){$(this).remove();});
});