TST: simplified data needed for integration test

integrationtests/test_issues.py

@@ -363,12 +363,8 @@ FirstConverter:
         [yaml.load(recursive_yaml, Loader=yaml.SafeLoader)])
     converter_registry = create_converter_registry(crawler_definition)
 
+    # Nested DictElements that match the yaml structure in recursive_yaml:
     data = {"data": {
-        "value_with_unit": "1.1 m",
-        "array_with_units": [
-            "1.1 cm",
-            "2.2 cm"
-        ]
     }}
     records = scan_structure_elements(DictElement(name="", value=data), crawler_definition,
                                       converter_registry)