JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td id="table_line_0">
            <input id="btnAdd0" type="button" value="+" onClick="newLine()" />
        </td>
        <td id="table_line_0">
            <input id="btnAdd1" type="button" value="+" onClick="newLine()" />
        </td>
    </tr>
</table>

JavaScript

function removeTr(id) {
    var ids = document.querySelectorAll(id),
        len = ids.length,
        n;
    if (len < 2) {return;}
    for (n = 0; n < len; n++) {
        if (ids[n]) {
            ids[n].parentElement.removeChild(ids[n]);
        }
    }
}

removeTr('#table_line_0');