#ufsm-ementario-cursos-docentes-filtros input[type="checkbox"]:checked ~ label > i.far.fa-square{
    display: none !important; 
}
#ufsm-ementario-cursos-docentes-filtros input[type="checkbox"]:not(:checked) ~ label > i.far.fa-check-square{
    display: none !important; 
}