DeepSpeed

d8e15da4 - XPU use stock pytorch instead of Intel Extension for PyTorch (#7877)

XPU use stock pytorch instead of Intel Extension for PyTorch (#7877) With Intel Extension for PyTorch retiring, XPU device would be supported by PyTorch 2.8+ and dependency to Intel Extension for PyTorch would not be needed. This PR removed IPEX dependency, adapt to builder protocol in PyTorch for XPU, and updated documents and tests accordingly. Note after this update, DeepSpeed will not work with previous PyTorch+IPEX on XPU devices. Suggest user to upgrade to latest PyTorch to get latest XPU features on XPU devices. Come with this PR is removal of InferenceBuilder, the kernel needed by InferenceBuilder is supported through Intel Extension for PyTorch. --------- Signed-off-by: Ma, Guokai <guokai.ma@intel.com> Co-authored-by: Olatunji Ruwase <tjruwase@gmail.com> Co-authored-by: Olatunji Ruwase <tunji.ruwase@snowflake.com>