Ad getting displayed even after the code has been removed

The ad, at the bottom of the content sidebar, has very poor click-through rate. Consequently, I wanted to change the ad’s location. For this, I deleted the ad code from the sidebar-content.php file. I have even hidden the ad from my adsense page. Unfortunately the ad still shows. I had previously configured it, such that the ad would be visible only on the homepage. So, I had added the following code:
`<?php if (is_home()) {
?>
<script async src=”//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js”></script>
<!– homepage_ad –>
<ins class=”adsbygoogle”
style=”display:inline-block;width:336px;height:280px”
data-ad-client=”ca-pub-2695893311245169″
data-ad-slot=”5867657335″></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
<?php
} ?>

I checked the parent theme, and the sidebar-content.php file does not have the ad code. I don’t know what is going wrong.

Any help will be appreciated.

PS: My website is https://www.hexapolis.com