Update config.json

config.json

@@ -25,9 +25,5 @@
   "transformers_version": "4.19.2",
   "type_vocab_size": 1,
   "use_cache": true,
-  "vocab_size": 50000,
-  "id2label": {
-    "0": "informal",
-    "1": "formal",
-  }
+  "vocab_size": 50000
 }