MAGETWO-66656: Fix retrieval of old value in config import

Author: shiftedreality

app/code/Magento/Config/etc/di.xml

@@ -279,14 +279,9 @@
             </argument>
         </arguments>
     </type>
-    <virtualType name="snapshotValue" type="Magento\Framework\App\Config\Value">
+    <type name="Magento\Framework\App\Config\Value">
         <arguments>
             <argument name="config" xsi:type="object">configSnapshot</argument>
         </arguments>
-    </virtualType>
-    <type name="Magento\Config\Model\Config\Importer">
-        <arguments>
-            <argument name="scopeConfig" xsi:type="object">snapshotValue</argument>
-        </arguments>
     </type>
 </config>