JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    
    <tr><td>Hello</td><td>World</td></tr>
    <tr><td>   </td><td>   </td></tr>
    <tr><td>   </td><td>   </td></tr>
    <tr><td>Hello</td><td>World</td></tr>
    <tr><td>   </td><td>   </td></tr>
    <tr><td>   </td><td>   </td></tr>
    
</table>

CSS

table { width: 100%; }
td { background: yellow; height: 50px; }

JavaScript

$(function () {
    $('table tr').each(function () {
        var flag = true;
        $(this).find('td').each(function () {
            var l = $(this).html().replace(/\s+/g, '').length;
            if (l) {
                flag = false;
            }
        });
        
        if (flag) {
            $(this).remove();
        }
    });
});