Remove stale internal dataset-metadata.json

dataset-metadata.json

@@ -1,28 +0,0 @@
-{
-  "title": "PROTAC-PLM-Bench",
-  "id": "thorklm/protac-plm-bench",
-  "licenses": [
-    {"name": "CC-BY-4.0"}
-  ],
-  "keywords": [
-    "chemistry",
-    "drug-discovery",
-    "protac",
-    "protein-degradation",
-    "benchmark"
-  ],
-  "resources": [
-    {
-      "path": "data/protac_bench.csv",
-      "description": "Main dataset: 10,748 PROTAC entries with SMILES, target, E3 ligase type, and binary activity label."
-    },
-    {
-      "path": "data/loto_folds.json",
-      "description": "65 pre-computed Leave-One-Target-Out fold assignments."
-    },
-    {
-      "path": "data/admet_scores.csv",
-      "description": "7-property ADMET cascade scores for all entries."
-    }
-  ]
-}