get rid of flask tutorials #4569

Job	Run time
pytorch_tutorial_build_worker (1, 15, linux.g5.12xlarge.nvidia.gpu)	15m 42s
pytorch_tutorial_build_worker (2, 15, linux.g5.4xlarge.nvidia.gpu)	42m 2s
pytorch_tutorial_build_worker (4, 15, linux.g5.4xlarge.nvidia.gpu)	36m 20s
pytorch_tutorial_build_worker (10, 15, linux.g5.4xlarge.nvidia.gpu)	17m 17s
pytorch_tutorial_build_worker (9, 15, linux.g5.4xlarge.nvidia.gpu)	18m 18s
pytorch_tutorial_build_worker (6, 15, linux.g5.4xlarge.nvidia.gpu)	21m 13s
pytorch_tutorial_build_worker (7, 15, linux.g5.4xlarge.nvidia.gpu)	24m 13s
pytorch_tutorial_build_worker (5, 15, linux.g5.4xlarge.nvidia.gpu)	23m 57s
pytorch_tutorial_build_worker (13, 15, linux.g5.4xlarge.nvidia.gpu)	20m 23s
pytorch_tutorial_build_worker (3, 15, linux.g5.4xlarge.nvidia.gpu)	22m 41s
pytorch_tutorial_build_worker (8, 15, linux.g5.4xlarge.nvidia.gpu)	15m 36s
pytorch_tutorial_build_worker (12, 15, linux.g5.4xlarge.nvidia.gpu)	32m 0s
pytorch_tutorial_build_worker (11, 15, linux.g5.4xlarge.nvidia.gpu)	17m 4s
pytorch_tutorial_build_worker (15, 15, linux.g5.4xlarge.nvidia.gpu)	26m 35s
pytorch_tutorial_build_worker (14, 15, linux.g5.4xlarge.nvidia.gpu)	36m 4s
pytorch_tutorial_build_manager	23m 21s
	6h 32m 46s

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