Follow Up after: https://github.com/pytorch/pytorch/pull/142282

Remove Checkout pytorch/builder for Linux Binary Builds
I believe we where not using builder already. Hence remove this checkout.
We should be using scripts from this folder:
```
/pytorch/.ci/${{ inputs.PACKAGE_TYPE }}/build.sh
```

TODO: Will followup with removing BUILDER_ROOT everywhere from PyTorch repo
Pull Request resolved: https://github.com/pytorch/pytorch/pull/143125
Approved by: https://github.com/kit1980