I have a wordpress blog (vitoshacademy.com) and long time ago I have put some google ads. In the footer, there is an ad, which I want to remove or edit. I am trying to locate the folder/file, which loads this ad, but so far unsuccessfully.

This is what I have tried (where I have looked into), but I cannot locate the code, loading the ad:

• Editor > Appearance > Theme Editor > Theme Footer (footer.php)
• site/wp-content/themes/responsive/footer.php

I do not have related plugins, that install the ad automatically.