remove metadata_fields in clapnq (#1718)

* remove metadata_fields in clapnq

* add corresponding json

---------

Co-authored-by: Elron Bandel <[email protected]>

Author: BenjSz

prepare/cards/rag/end_to_end/clapnq.py

@@ -4,7 +4,7 @@
 from unitxt import add_to_catalog
 from unitxt.blocks import TaskCard
 from unitxt.loaders import LoadCSV, LoadHF
-from unitxt.operators import Copy, ListFieldValues, Set
+from unitxt.operators import Copy, ListFieldValues
 from unitxt.templates import InputOutputTemplate
 from unitxt.test_utils.card import test_card
 
@@ -82,11 +82,6 @@ class ClapNqBenchmark:
             fields=["text"],
             to_field="passages",
         ),
-        Set(
-            fields={
-                "metadata_field": {},
-            }
-        ),
     ],
     task="tasks.rag.corpora",
     __tags__={"license": "Apache License 2.0", "url":"https://huggingface.co/datasets/PrimeQA/clapnq"},

src/unitxt/catalog/cards/rag/documents/clap_nq/en.json

@@ -21,12 +21,6 @@
                 "text"
             ],
             "to_field": "passages"
-        },
-        {
-            "__type__": "set",
-            "fields": {
-                "metadata_field": {}
-            }
         }
     ],
     "task": "tasks.rag.corpora",