Multi-scale decoder is removed from DeepFaceLab

Multi-scale decoder is removed from DeepFaceLab 4 days ago

This commit did the change:
https://github.com/iperov/DeepFaceLab/commit/b6b92bded0cc3be1de54b899ca8bc36238433396

And many people complain that the model has error
https://github.com/iperov/DeepFaceLab/issues/411

Since the network architecture is removed, so the model retraining is needed.