Removed version fixes for torch transformers in windows ptq example requirements (#1275)

### What does this PR do?

Type of change: Bug fix

Removed version fixes for torch and transformers



### Testing
Tested quantization with a couple of models . Working as expected.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **Chores**
* Relaxed dependency specs: removed strict pin for torch to allow latest
compatible installs, and constrained transformers to <5.0.0 for broader
compatibility and easier updates.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

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Signed-off-by: Hrishith Thadicherla <hthadicherla@nvidia.com>
Signed-off-by: Hrishith Thadicherla <99313418+hthadicherla@users.noreply.github.com>

Author: hthadicherla

examples/windows/onnx_ptq/genai_llm/requirements.txt

@@ -1,3 +1,3 @@
 datasets>=2.14.5
-torch==2.9.0
-transformers==4.57.3
+torch
+transformers<5.0.0