On my CV, I have a few talks listed where I was not the presenting author (though I am a co-author on the work).
I have left them on my CV because as a graduate student, my CV is pretty slim. However the work in question was recently published in a journal, which now appears on my CV.
Should I delete all the talks where I was not presenting author? I'm not sure adding length to my CV is really appropriate since the information is fairly redundant (all the same line of research and similar talk titles, just different conferences).