You can't delete your post, only a moderator can delete it.
As for if it won't be a help to anyone, perhaps it will. Don't display your email in publicly available forums, there are spambots that trawl the internet harvesting email addresses to add to spam lists. So I along with the others suggest you don't display it publicly change your profile.
This was where the PM function was handy (provided there were proper safeguards to avoid misuse), you had a means of communication between forum members without hanging your email out there for all to see, use, misuse, abuse, etc.