JSFiddle - React, Tailwind, and code Playground

HTML

<table id="test">
    <tr>
    <td>w</td>
    <td>d</td>
    <td>d</td>
    <td>d</td>
    </tr>
    <tr>
   <td>2</td>
    <td>2</td>
    <td>3</td>
    <td>4</td>
    </tr>
    <tr>
    <td>f</td>
    <td>2</td>
    <td>e</td>
    <td>w</td>
    </tr>
    <tr>
    <td>d</td>
    <td>d</td>
    <td>w</td>
    <td>w</td>
    </tr>
    </table>

JavaScript

var seen = {};
$('table tr').each(function() {
    var txt = $(this).children("td:eq(2)").text();
    console.log(txt)
    if (seen[txt])
        $(this).remove();
    else
        seen[txt] = true;
});