STEPS:
1) Click on the Apple logo at the far left of the menu bar and select “System Preferences”.
2) Click “Users & Groups”.
3) Select the user account you wish to delete and click the “-” button at the bottom.
4) Choose “Delete the home folder” and hit enter.
5) If you’re paranoid like me and want to make sure the home folder was deleted, you can open Terminal and run ls /Users
6) Notice the account name is gone. Success.
**If for any reason you still see your home folder, run this command to remove it completely:
rm -R /Users/account_name
jamauai's Sysadmin Blog 
Reblogged this on KnoGimmicks Social Media & Web Design.
Alternatively, you can do this entirely from the Terminal with the following 2 commands:
(Where “account_name” is the name of the user you want to delete.)
sudo dscl . -delete /Users/account_name
sudo rm -rf /Users/account_name
For advanced users like yourself, you sure can!