Remove Tensor.data attribute from tutorial #3576

Job	Run time
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 11s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	53m 39s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	22m 26s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	31m 42s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	23m 25s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	20m 46s
pytorch_tutorial_build_worker (7, 15, linux.4xlarge.nvidia.gpu)	22m 40s
pytorch_tutorial_build_worker (8, 15, linux.4xlarge.nvidia.gpu)	17m 15s
pytorch_tutorial_build_worker (9, 15, linux.4xlarge.nvidia.gpu)	22m 51s
pytorch_tutorial_build_worker (10, 15, linux.4xlarge.nvidia.gpu)	18m 24s
pytorch_tutorial_build_worker (11, 15, linux.4xlarge.nvidia.gpu)	18m 15s
pytorch_tutorial_build_worker (12, 15, linux.4xlarge.nvidia.gpu)	35m 32s
pytorch_tutorial_build_worker (13, 15, linux.4xlarge.nvidia.gpu)	46m 58s
pytorch_tutorial_build_worker (14, 15, linux.4xlarge.nvidia.gpu)	36m 53s
pytorch_tutorial_build_worker (15, 15, linux.4xlarge.nvidia.gpu)	29m 23s
pytorch_tutorial_build_manager	22m 23s
	7h 17m 43s

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