small fix

Author: Cyrilvallez

tests/utils/test_configuration_utils.py

@@ -40,8 +40,6 @@
     "output_attentions": True,
     "torchscript": True,
     "dtype": "float16",
-    "use_bfloat16": True,
-    "tf_legacy_loss": True,
     "pruned_heads": {"a": 1},
     "tie_word_embeddings": False,
     "is_decoder": True,