Use magnifying glass in Chrome Webmaster Tools, check rules on the right hand side, on and off, you can also navigate starting from <html> towards <body> - <head>, and so on (horizontally, meaning you can select it on a horizontal menu there). Get familiar with this tool, and then figure out what you need to do. You may need to delete some php code, in the child theme, you would need to work on that.
It is possible, that somebody did something like that before, search the Internet for it too.
Edit: I mean, Chrome Webmaster Tools magnifying glass will show you the html code too, so you can easily find, what code needs to be deleted or changed.
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