Remove duplicated OPs from IPEX 2.6 (#5290) (#5321)

* Remove below OPs:
instance_norm
pixel_shuffle
torchvision::nms
torchvision::roi_align
torchvision::_roi_align_backward
torchvision::roi_align

* Implement torch.xpu.nms and torch.xpu.roi_align using torchvision instead of IPEX

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Co-authored-by: guangyey <guangye.yu@intel.com>

Author: huaiyuzh