[Accelerate] Remove is_module_offloaded and update_prefix_dict (#366)

Signed-off-by: Kyle Sayers <kylesayrs@gmail.com>

Author: kylesayrs

src/compressed_tensors/utils/offload.py

@@ -68,10 +68,8 @@
 
 
 __all__ = [
-    "is_module_offloaded",
     "get_execution_device",
     "get_offloaded_device",
-    "update_prefix_dict",
     "update_parameter_data",
     "register_offload_parameter",
     "update_offload_parameter",
@@ -117,11 +115,6 @@ def fallback_fn(*args, **kwargs):
 """ Candidates for Depreciation """
 
 
-@check_accelerate(fallback=False)
-def is_module_offloaded(module: torch.nn.Module) -> bool:
-    return has_offloaded_params(module)
-
-
 def get_offloaded_device(module: torch.nn.Module) -> torch.device:
     """
     :param module: module to check
@@ -137,25 +130,6 @@ def get_offloaded_device(module: torch.nn.Module) -> torch.device:
         return get_execution_device(module)
 
 
-@check_accelerate(fallback=None)
-def update_prefix_dict(module: torch.nn.Module, key: str, data: torch.Tensor):
-    """
-    Updates the offloaded state dict for a given module. Parameter named key is replaced
-    by data. This is neccesary because parameter updates for offloaded modules do not
-    persist automatically between loads. This function only affects the offloaded
-    state dict and not the current state of the loaded module.
-
-    :param module: module containing the parameter to update
-    :param key: name of parameter to update
-    :param data: tensor to update parameter with in the offloaded state dict
-    """
-    if not has_offloaded_params(module):
-        raise ValueError("Prefix dict is only applicable to offloaded modules")
-
-    weights_map = module._hf_hook.weights_map
-    offload_to_weights_map(weights_map, key, data)
-
-
 def update_parameter_data(
     module: torch.nn.Module, new_param_data: torch.Tensor, param_name: str
 ):