fix No module named 'torchvision.models.utils' error

[pgchui]

Error when running detect.py

Error message:

  File "<directory_to_lanedet>/lanedet/lanedet/models/backbones/mobilenet.py", line 4, in <module>
    from torchvision.models.utils import load_state_dict_from_url
ModuleNotFoundError: No module named 'torchvision.models.utils'

torchvision verison = 0.11.1

Using from torch.hub import load_state_dict_from_url fixed the problem.