JSFiddle - React, Tailwind, and code Playground

HTML

<select id="IBE1_IBE_NurFlug1_ddl_Abflughafen">
    <option value="foo">This will not be removed.</option>
    <option value="TR">This WILL be removed.</option>
    <option value="foo">This will not be removed.</option>
        <option value="TR">This WILL be removed.</option>
        <option value="foo">This will not be removed.</option>
</select>

JavaScript

(function () {
    var select = $('#IBE1_IBE_NurFlug1_ddl_Abflughafen');
    var diff = 0;
    console.dir(select[0].options);
    select.find('option').each(function(x) {
        if ($(this).is('[value*="TR"]')) {
            select[0].options[x+diff] = null;
            diff -= 1;
        }
    });
}());