I am wondering how to remove a commitment of a site that has gone into private beta - unlike what was discussed in Stuck with a commitment of a closed Private Beta, the private beta is up and running, but I am deleting my account(*) from there, thus need my commitment also remove.
(*) I do not want to get into the why I am deleting my account there, as it is irrelevant to my question (I misunderstood the purpose of the site).