Update ddp_minGPT to remove FSDP1 references (#3442) #4759

Job	Run time
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	14m 37s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	22m 20s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	39m 20s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	21m 28s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	13m 57s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	16m 50s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	20m 58s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	15m 42s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	27m 39s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	14m 10s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	19m 6s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	14m 42s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	26m 5s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	42m 26s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	16m 34s
pytorch_tutorial_build_manager	22m 26s
	5h 48m 20s

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