Answer is, you can't. As per PayPal Customer Service:
"My name is Arnie from PayPal Consumer Support. Thank you for the opportunity to provide assistance for you today. I understand that you would like to know how to remove the names that are listed on the send money option. Do not worry if the resolution provided previously was not helpful I'll go ahead and explain it to you further. I am sorry to tell but there is no way or option for you to remove the names that are listed on the send money tab. When everytime you send a payment, you need to review the "send to" option just to avoid any problems with your payment. Should you have further inquiries, please do not hesitate to call us at: Login, Click "Contact Us", Click "Call Us" during these hours: 4:00 AM PT to 10:00 PM PT, Monday?Friday 6:00 AM PT to 8:00 PM PT, Saturday and Sunday Thank you for choosing PayPal."
There you go, we're all stuck with them.
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