You can use the tgTranslatorPostFilterHook to edit / modify the content of the translated pages before it is served to the user as described below:

function tgTranslatorPostFilterHook($data, $language, $engine, $url, $translationError) {

if(!$translationError) {
// post-process your translated page content i.e. remove unwanted google popups from translated page content here. $data contains translated page content.
}
return $data;

}