From a privacy point of view, there is no point at all in deleting the data. Assuming it was created from email, it can be re-created from email. Google has sa

From a privacy point of view, there is no point at all in deleting the data. Assuming it was created from email, it can be re-created from email. Google has said they do not use the info in advertising or sell it to anyone else. Either you think they're telling the truth or you don't. If you think they're being truthful, there is no problem to solve here. If you think they are lying, then you'd be stupid to assume they won't recompute the data secretly without telling you. Either way, deleting the copy of the data that you can view accomplishes nothing.