It's already done, the hidden property or etc isn't appear in select2 component. Only have disabled property. So, we combined the selector aria-disabled="true" in css.

<li class="select2-results__option" id="select2-multiple_one-result-nqh8-1" role="option" aria-disabled="true" data-select2-id="select2-multiple_one-result-nqh8-1">BIAYA BURUH</li>

With this css

.select2-results__option[aria-disabled="true"] {
    display: none;
}

Maybe it will help. Thanks.