We do not delete accounts except in extraordinary circumstances on WikiTree. What you will need to do is merge the two profiles together. Scroll to the bottom of your profile page and click on the link "initiate a merge." Then enter the profile ID numbers of both the duplicates. You should make sure that you merge into the lowest ID number, which probably is the one that you entered first.
If you have any trouble with this, please let me know.
Shirley