Minor update on the config

Removed the target langauge

tokenizer_config.json

@@ -63,7 +63,7 @@
   "sep_token": "</s>",
   "sp_model_kwargs": {},
   "src_lang": "am_IC",
-  "tgt_lang": "am_CR",
+  "tgt_lang": null,
   "tokenizer_class": "MBartTokenizer",
   "tokenizer_file": null,
   "unk_token": "<unk>"