jqgrid过滤器在加载时删除一行

$("#grid").jqGrid({
    url: "data.json",
    datatype: "json",
    colModel: [
        { label: "ID", name: "id", key: true, width: 70 },
        { label: "Name", name: "name", width: 150 },
        { label: "Age", name: "age", width: 80 },
        { label: "City", name: "city", width: 100 }
    ],
    viewrecords: true,
    height: "auto",
    rowNum: 10,
    pager: "#pager"
});

$("#grid").jqGrid({
    url: "data.json",
    datatype: "json",
    colModel: [
        { label: "ID", name: "id", key: true, width: 70 },
        { label: "Name", name: "name", width: 150 },
        { label: "Age", name: "age", width: 80 },
        { label: "City", name: "city", width: 100 }
    ],
    viewrecords: true,
    height: "auto",
    rowNum: 10,
    pager: "#pager",
    beforeProcessing: function(data) {
        for (var i = 0; i< data.rows.length; i++) {
            if (data.rows[i].id == 1) {
                data.rows.splice(i, 1);
                break;
            }
        }
    }
});