remove notes field that does not exsist anymore

src/backend/InvenTree/order/models.py

@@ -2482,7 +2482,6 @@ class SalesOrderShipment(
         shipment_date: Date this shipment was "shipped" (or null)
         checked_by: User reference field indicating who checked this order
         reference: Custom reference text for this shipment (e.g. consignment number?)
-        notes: Custom notes field for this shipment
     """
 
     @classmethod

src/backend/InvenTree/order/serializers.py

@@ -1378,7 +1378,6 @@ class SalesOrderShipmentSerializer(
             'invoice_number',
             'barcode_hash',
             'link',
-            'notes',
             # Extra detail fields
             'parameters',
             'checked_by_detail',