Unnecessary new lines in the output while training with PyTorch Backend

[PiyushM1]

The progress bar should ideally stay in the same place. But it goes on printing increasing number of new lines after printing the progress on each step. This makes searching for the information after each epoch very difficult.

[abhi-kumar]

Thank you for pointing out the issue. It may be due to the recent tqdm update. We will try to resolve it soon.