table.dataTable thead > tr > th.dt-orderable-asc span.dt-column-order:before,
table.dataTable thead > tr > th.dt-ordering-asc span.dt-column-order:before,
table.dataTable thead > tr > td.dt-orderable-asc span.dt-column-order:before,
table.dataTable thead > tr > td.dt-ordering-asc span.dt-column-order:before {
    display: none !important;
    content: none !important;
    visibility: hidden !important;
    width: 0 !important;
    height: 0 !important;
}