remove old pt file

deepspeed/pt/deepspeed_zero_utils.py

-import torch
-from torch.autograd import Variable
-import collections
-
-
-def async_migrate_to(obj, dev, main_stream=None):
-    if torch.is_tensor(obj):
-        obj = Variable(obj)
-    if isinstance(obj, Variable):
-        v = obj.cuda(dev, async=True)
-        if main_stream is not None:
-            v.data.record_stream(main_stream)
-        return v
-    elif isinstance(obj, collections.Mapping):
-        return {k: async_copy_to(o, dev, main_stream) for k, o in obj.items()}
-    elif isinstance(obj, collections.Sequence):
-        return [async_copy_to(o, dev, main_stream) for o in obj]
-    else:
-        return obj
-
-
-def async_copy_to(obj, dev, main_stream=None):
-    if torch.is_tensor(obj):
-        obj = Variable(obj)
-    if isinstance(obj, Variable):
-        target = torch.empty_like(obj, device=dev).copy_(obj)
-        if main_stream is not None:
-            target.data.record_stream(main_stream)
-        return target
-    elif isinstance(obj, collections.Mapping):
-        return {k: async_copy_to(o, dev, main_stream) for k, o in obj.items()}
-    elif isinstance(obj, collections.Sequence):
-        return [async_copy_to(o, dev, main_stream) for o in obj]