MAGETWO-95483: Can't delete a cart entry when the cart has a shipping address

- Removed all shipping addresses in reset plugin to avoid logical errors

Author: nathanjosiah

app/code/Magento/Checkout/Plugin/Model/Quote/ResetQuoteAddresses.php

@@ -27,6 +27,11 @@ public function afterRemoveItem(Quote $quote, Quote $result, $itemId): Quote
         if (empty($result->getAllVisibleItems())) {
             foreach ($result->getAllAddresses() as $address) {
                 $result->removeAddress($address->getId());
+
+                $extensionAttributes = $result->getExtensionAttributes();
+                if (!$result->isVirtual() && $extensionAttributes && $extensionAttributes->getShippingAssignments()) {
+                    $extensionAttributes->setShippingAssignments([]);
+                }
             }
         }