Croissant: remove unsourced recordSet

croissant.json

@@ -141,37 +141,5 @@
       "encodingFormat": "text/csv",
       "includes": "data/evaluation_points/*.csv"
     }
-  ],
-
-  "recordSet": [
-    {
-      "@type": "cr:RecordSet",
-      "@id": "test-cases",
-      "name": "test-cases",
-      "description": "Each record represents one of the 14 test cases (8 v1 + 6 v2-new).",
-      "field": [
-        {
-          "@type": "cr:Field",
-          "@id": "test-cases/case_id",
-          "name": "case_id",
-          "description": "Canonical case identifier (e.g. NASA_2DZP, alpha_15_13929_4048).",
-          "dataType": "sc:Text"
-        },
-        {
-          "@type": "cr:Field",
-          "@id": "test-cases/dimensionality",
-          "name": "dimensionality",
-          "description": "2D or 3D leaderboard membership.",
-          "dataType": "sc:Text"
-        },
-        {
-          "@type": "cr:Field",
-          "@id": "test-cases/version",
-          "name": "version",
-          "description": "v1 (inherited from the original closure-challenge benchmark) or v2-new (added in this release).",
-          "dataType": "sc:Text"
-        }
-      ]
-    }
   ]
 }