Hide recurring payment option when user is recording a pledge payment

Users should not be allowed to record a pledge payment as a "recurring contribution". These are 2 separate mechanism - and doing so breaks the payment schedule. The recurring contribution fieldset should be suppressed when the Contribution form is accessed with a ppid parameter.

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To reproduce this issue:

• Create a pledge of $600 total, with 1 expected future payment of $600.

• Expand the pledge schedule, then click "make credit card payment"

• Choose to do a repeating payment of $100 for 6 installments, and enter the credit card details for this person.

The total pledge balance is still $600. Yet the next expected payment is now listed as $1100.

BTW: Authorize.Net is the payment gateway in this situation.