See the FAQ: http://www.wikitree.com/wiki/Deletion_FAQ
Short(ish) answer: Users cannot delete profiles.
The admin's can (within 48 hours of the profile being created)- but generally that is only done if you have created 1000's of duplicates (importing the same gedcom twice).
You can merge the profiles, since you are the profile manager of all 2 or 3 profiles you can do all the approvals immediately.
Another option for a brand-new profile, i.e. that has no other pages linked to it, is to to just reuse the profile for another family member with the same Last Name at Birth and change the linked family members as required. You don't ever want to do that with a profile that has been around awhile, because you never know what links have been made to it by other users - but for a brand new profile it is an option.