Update load warnings (#126)

ultravox/model/ultravox_model.py

@@ -34,14 +34,8 @@ class UltravoxModel(transformers.LlamaPreTrainedModel):
 
     config_class = UltravoxConfig
     config: UltravoxConfig  # for type hinting
-    # We minimize the weights in state_dict in order to reduce the size of the checkpoint
-    # The issue is that load_pretrained() uses state_dict() keys to know what keys are expected
-    # As such we have to tell is to ignore some keys that are not always in the model
-    _keys_to_ignore_on_load_unexpected = ["audio_tower.*", "language_model.*"]
-    # Usually we load encoder weights from a pretrained model, so we don't want to load the decoder weights
-    # Technically we never hit this issue because these keys are already removed from state_dict() however,
-    # but there's no harm in keeping it here for when we change that behavior.
-    _keys_to_ignore_on_load_missing = ["audio_tower.*"]
+    # Usually we load encoder and LLM weights from a pretrained model separately, so they are allowed to be missing
+    _keys_to_ignore_on_load_missing = ["audio_tower.*", "language_model.*"]
 
     def __init__(self, config: UltravoxConfig):
         super().__init__(config)