@ragnarok , I have deleted your other thread , please just post the question one time.
To answer your question , if you have bought the script , I don't think the developer will risk his reputation and put his ads with yours.
But if you have a nulled script (hacked script) that's possible and you can easily delete the ad by changing it on the PHP script.
Another thing , sometimes your browser may have some bad extensions so ads appears on all websites , for that you need to clean your browser.