You can request for your account to be removed from the Kaleidoscope platform at anytime. Note, that any in-progress application, reviews, or contributor requests will be removed and not accessible if you create a new account.
To have your account deleted, click on the blue "K"messenger bubble in the bottom righthand corner of the screen. Then follow the prompts to delete your account.
You can also email support directly at [email protected] with the subject line "Delete Account".