Delete outdated / duplicated pages - Payment Processor & PaymentProcessorType

I don't think

https://docs.civicrm.org/dev/en/latest/extensions/payment-processors/ or https://docs.civicrm.org/dev/en/latest/extensions/payment-processors/types/

have any current information in them that is not in

https://docs.civicrm.org/dev/en/latest/extensions/payment-processors/create/

@MikeyMJCO