Removes pinned torchtext and torch for windows.

[dantreiman]

So I have a working stack on windows (Windows 10, conda, python 3.9) installed with:

% conda install pytorch torchvision torchtext torchaudio cudatoolkit=11.3 -c pytorch

torch=='1.10.1'
torchaudio='0.10.1'
torchtext=='0.11.1'
torchvision=='0.11.2'

But, running ludwig train gives the error:

pkg_resources.DistributionNotFound: The 'torchvision==0.10.1' distribution was not found and is required by ludwig

After removing the windows-specific pinned dependencies, everything works. I was able to train on an image dataset just fine.

So, I tentatively think that pytorch/pytorch#65473 has been fixed in torchvision 0.11.x and forward, and it should be OK to remove the pinned versions for windows... though maybe we should re-verify the original issue first.

[github-actions]

Unit Test Results

       6 files  ±0         6 suites  ±0   1h 30m 2s ⏱️ + 3m 22s
2 770 tests ±0  2 739 ✔️ ±0  31 💤 ±0  0 ❌ ±0 
8 310 runs  ±0  8 213 ✔️ ±0  97 💤 ±0  0 ❌ ±0 

Results for commit c1513cd. ± Comparison against base commit 20b95a0.

♻️ This comment has been updated with latest results.

[tgaddair]

cc @carlogrisetti

[carlogrisetti]

I was working on a similar PR... Please note that I am seeing torch 1.11 working fine, while having some issues with 1.12 on windows.
Still trying to figure out who's the culprit :)