table#renderedTable th:nth-child(1) span.sorting-icons {
    display: none;
}
table#renderedTable th:nth-child(3) span.sorting-icons {
    display: none;
}
table#renderedTable th:nth-child(5) span.sorting-icons {
    display: none;
}
table#renderedTable th:nth-child(6) span.sorting-icons {
    display: none;
}