Adding PayPal to a gravity form is easy!
But when there is an unwanted “Pay Later” button – what do you do?
Put the following code into your functions.php file, and that button will be removed:
add_filter( 'gform_ppcp_disable_funding', 'ppcp_disable_paylater' );
function ppcp_disable_paylater( $disabled_funding ) {
$disabled_funding[] = 'paylater';
return $disabled_funding;
}