找到文件

vim /var/www/html/home.php 

删除代码段

    <div class="adleft" id="adleftContainer">
        <button onclick="closeAd()">关闭</button>
        <a href="https://www.ecoo.top/ad.html" target="_blank">
            <img src="https://www.ecoo.top/ad.jpg" width="141px" height="203px" border="1" />
        </a>
    </div>

保存即可