Removed customer_identifier directly from models

Author: ihorvansach

Model/AbstractDataLayer.php

@@ -317,6 +317,7 @@ protected function getProductAttributeValue(Product $product, ?string $attribute
      * @throws NoSuchEntityException
      * @throws \Magento\Framework\Exception\LocalizedException
      */
+    /*
     protected function getCustomerGroupCode(): string
     {
         if (null === $this->customerGroupCode) {
@@ -327,13 +328,14 @@ protected function getCustomerGroupCode(): string
                     $group = $this->groupRepository->getById($customerGroupId);
                     $this->customerGroupCode = (string)$group->getCode();
                 } catch (NoSuchEntityException $e) {
-                    /* Do nothing */
+                    /* Do nothing *
                 }
             }
         }
 
         return $this->customerGroupCode;
     }
+    */
 
     /**
      * @param array $data

Model/DataLayer/AbstractOrder.php

@@ -67,8 +67,7 @@ public function get(Order $order, string $requester = ''): array
                 ],
                 'is_virtual' => (bool)$order->getIsVirtual(),
                 'shipping_description' => $order->getShippingDescription(),
-                'customer_is_guest' => (bool)$order->getCustomerIsGuest(),
-                'customer_identifier' => hash('sha256', (string)$order->getCustomerEmail()),
+                'customer_is_guest' => (bool)$order->getCustomerIsGuest()
             ];
 
             if ($order->getCustomerId()) {

Model/DataLayer/BeginCheckout.php

@@ -67,8 +67,7 @@ public function get(Quote $quote): array
                 'value' => $this->formatPrice((float)$value),
                 'coupon' => $quote->getCouponCode() ?: '',
                 'items' => $items
-            ],
-            'customer_identifier' => $quote->getCustomerEmail() ? hash('sha256', (string)$quote->getCustomerEmail()) : ''
+            ]
         ];
 
         if ($quote->getCustomerId()) {

Model/DataLayer/ViewCart.php

@@ -71,8 +71,7 @@ public function get(Quote $quote): array
             ],
             'items_count' => count($items),
             'items_qty' => $itemsQty,
-            'coupon_code' => $quote->getCouponCode() ?: '',
-            'customer_identifier' => $quote->getCustomerEmail() ? hash('sha256', (string)$quote->getCustomerEmail()) : ''
+            'coupon_code' => $quote->getCouponCode() ?: ''
         ];
 
         if ($quote->getCustomerId()) {