MAGETWO-53940: Unnecessary redirect to checkout page after Sign-in

Author: Sergii Kovalenko

app/code/Magento/Checkout/Controller/Index/Index.php

@@ -34,8 +34,6 @@ public function execute()
 
         $this->_customerSession->regenerateId();
         $this->_objectManager->get('Magento\Checkout\Model\Session')->setCartWasUpdated(false);
-        $currentUrl = $this->_url->getUrl('*/*/*', ['_secure' => true]);
-        $this->_objectManager->get('Magento\Customer\Model\Session')->setBeforeAuthUrl($currentUrl);
         $this->getOnepage()->initCheckout();
         $resultPage = $this->resultPageFactory->create();
         $resultPage->getConfig()->getTitle()->set(__('Checkout'));