Fix filter_box

Author: kgabryje

superset/common/query_context_factory.py

@@ -65,6 +65,9 @@ def create(
 
         result_type = result_type or ChartDataResultType.FULL
         result_format = result_format or ChartDataResultFormat.JSON
+        for query_obj in queries:
+            if query_obj.get("datasource", None) is not None:
+                del query_obj["datasource"]
         queries_ = [
             self._process_query_object(
                 datasource_model_instance,