MC-17411: Add plugins/update existing ones to support the Payflow Pro

- fix static failures - removed unused session elements

Author: Prabhu Ram

app/code/Magento/Paypal/Model/Payflow/Service/Response/Transaction.php

@@ -11,7 +11,6 @@
 use Magento\Framework\Intl\DateTimeFactory;
 use Magento\Payment\Model\Method\Logger;
 use Magento\Paypal\Model\Payflow\Service\Response\Handler\HandlerInterface;
-use Magento\Framework\Session\Generic;
 use Magento\Paypal\Model\Payflowpro;
 use Magento\Quote\Api\CartRepositoryInterface;
 use Magento\Paypal\Model\Payflow\Transparent;
@@ -25,11 +24,6 @@
  */
 class Transaction
 {
-    /**
-     * @var Generic
-     */
-    protected $sessionTransparent;
-
     /**
      * @var CartRepositoryInterface
      */
@@ -61,7 +55,6 @@ class Transaction
     private $dateTimeFactory;
 
     /**
-     * @param Generic $sessionTransparent
      * @param CartRepositoryInterface $quoteRepository
      * @param Transparent $transparent
      * @param PaymentMethodManagementInterface $paymentManagement
@@ -70,15 +63,13 @@ class Transaction
      * @param DateTimeFactory $dateTimeFactory
      */
     public function __construct(
-        Generic $sessionTransparent,
         CartRepositoryInterface $quoteRepository,
         Transparent $transparent,
         PaymentMethodManagementInterface $paymentManagement,
         HandlerInterface $errorHandler,
         Logger $logger,
         DateTimeFactory $dateTimeFactory
     ) {
-        $this->sessionTransparent = $sessionTransparent;
         $this->quoteRepository = $quoteRepository;
         $this->transparent = $transparent;
         $this->paymentManagement = $paymentManagement;