[Your name and address]
USCIS [office where you filed]
Subject: Notification of application withdrawal
I-765 Application for Employment Authorization [Your Petition Form Number and Type]
Petitioner: [Your name]
USCIS Receipt number: [Receipt number]
Purpose: Withdraw the application.
Reason: [Do not need work authorization now.] - Reason is mandatory to provide.
Date of Application Submission: [Date]
My contact details:
Address: [Your Address]
Phone: [phone number]
Email: [your email].
[Your Signature] - Should match the one on application.