MAGETWO-86260: [Backport #12668 into 2.3-develop] Fix for reverting stock twice for cancelled orders #12949

 - Merge Pull Request #12949 from dverkade/magento2:2.3-Fix-for-reverting-stock-twice-for-cancelled-orders
 - Merged commits:
   1. 1055076

Author: adrian-martinez-interactiv4

app/code/Magento/CatalogInventory/etc/events.xml

@@ -27,9 +27,6 @@
     <event name="sales_model_service_quote_submit_failure">
         <observer name="inventory" instance="Magento\CatalogInventory\Observer\RevertQuoteInventoryObserver"/>
     </event>
-    <event name="restore_quote">
-        <observer name="inventory" instance="Magento\CatalogInventory\Observer\RevertQuoteInventoryObserver"/>
-    </event>
     <event name="sales_order_item_cancel">
         <observer name="inventory" instance="Magento\CatalogInventory\Observer\CancelOrderItemObserver"/>
     </event>