remove format check for safetensors file (huggingface#10864)

remove check

Author: SunMarc

src/diffusers/models/model_loading_utils.py

@@ -134,19 +134,6 @@ def _fetch_remapped_cls_from_config(config, old_class):
         return old_class
 
 
-def _check_archive_and_maybe_raise_error(checkpoint_file, format_list):
-    """
-    Check format of the archive
-    """
-    with safetensors.safe_open(checkpoint_file, framework="pt") as f:
-        metadata = f.metadata()
-        if metadata is not None and metadata.get("format") not in format_list:
-            raise OSError(
-                f"The safetensors archive passed at {checkpoint_file} does not contain the valid metadata. Make sure "
-                "you save your model with the `save_pretrained` method."
-            )
-
-
 def _determine_param_device(param_name: str, device_map: Optional[Dict[str, Union[int, str, torch.device]]]):
     """
     Find the device of param_name from the device_map.
@@ -183,7 +170,6 @@ def load_state_dict(
                 # tensors are loaded on cpu
                 with dduf_entries[checkpoint_file].as_mmap() as mm:
                     return safetensors.torch.load(mm)
-            _check_archive_and_maybe_raise_error(checkpoint_file, format_list=["pt", "flax"])
             if disable_mmap:
                 return safetensors.torch.load(open(checkpoint_file, "rb").read())
             else: