[Flax] dont warn for bf16 weights (huggingface#923)

dont warn for bf16 weights

modeling_flax_utils.py

@@ -482,29 +482,6 @@ def from_pretrained(
                 " training."
             )
 
-        # dictionary of key: dtypes for the model params
-        param_dtypes = jax.tree_map(lambda x: x.dtype, state)
-        # extract keys of parameters not in jnp.float32
-        fp16_params = [k for k in param_dtypes if param_dtypes[k] == jnp.float16]
-        bf16_params = [k for k in param_dtypes if param_dtypes[k] == jnp.bfloat16]
-
-        # raise a warning if any of the parameters are not in jnp.float32
-        if len(fp16_params) > 0:
-            logger.warning(
-                f"Some of the weights of {model.__class__.__name__} were initialized in float16 precision from "
-                f"the model checkpoint at {pretrained_model_name_or_path}:\n{fp16_params}\n"
-                "You should probably UPCAST the model weights to float32 if this was not intended. "
-                "See [`~ModelMixin.to_fp32`] for further information on how to do this."
-            )
-
-        if len(bf16_params) > 0:
-            logger.warning(
-                f"Some of the weights of {model.__class__.__name__} were initialized in bfloat16 precision from "
-                f"the model checkpoint at {pretrained_model_name_or_path}:\n{bf16_params}\n"
-                "You should probably UPCAST the model weights to float32 if this was not intended. "
-                "See [`~ModelMixin.to_fp32`] for further information on how to do this."
-            )
-
         return model, unflatten_dict(state)
 
     def save_pretrained(