🐛 Describe the bug

Please see: #138506
and https://dev-discuss.pytorch.org/t/pytorch-deprecation-of-conda-nightly-builds/2590

Pytorch have deprecated usage of conda builds for release 2.6. We need to remove mentioning of conda package installtion instructions from tutorials and documents.

Examples:
https://pytorch.org/tutorials/beginner/introyt/tensorboardyt_tutorial.html#before-you-start

• https://pytorch.org/audio/main/build.linux.html
• https://pytorch.org/audio/main/installation.html
• https://pytorch.org/audio/main/build.windows.html#install-pytorch
• https://pytorch.org/tutorials/recipes/recipes/tensorboard_with_pytorch.html
• https://pytorch.org/tutorials/beginner/introyt/captumyt.html
• https://pytorch.org/vision/main/training_references.html
• https://pytorch.org/tutorials/advanced/torch_script_custom_ops.html#environment-setup
• https://pytorch.org/docs/stable/notes/windows.html#package-not-found-in-win-32-channel

Versions

2.7.0

cc @svekars @sekyondaMeta @AlannaBurke