[inebriate]

are you using paypal web payments pro or whatever its called? if so, i believe you have to keep it in as part of your agreement when using the direct payments...if you want to chance it and dont think that they will bother to look, you can edit customer/main/checkout.tpl, search for the word paypal and comment out the correct one

if you want to completely remove all paypal forms of payment, goto the admin section and select payment methods, and uncheck the paypal payments