remove spatial_size #799

Job	Run time
onnx / linux-job	5m 16s
unittests-extended / linux-job	17m 33s
unittests-linux (3.10, linux.12xlarge, cpu) / linux-job	31s
unittests-linux (3.11, linux.12xlarge, cpu) / linux-job	45s
unittests-linux (3.8, linux.12xlarge, cpu) / linux-job	50s
unittests-linux (3.8, linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job	59s
unittests-linux (3.9, linux.12xlarge, cpu) / linux-job	40s
unittests-macos (3.11, macos-12) / macos-job	2m 21s
unittests-macos (3.10, macos-12) / macos-job	2m 19s
unittests-macos (3.8, macos-12) / macos-job	2m 24s
unittests-macos (3.8, macos-m1-12) / macos-job	1m 6s
unittests-macos (3.9, macos-12) / macos-job	2m 31s
unittests-windows (3.10, windows.4xlarge, cpu) / windows-job	3m 0s
unittests-windows (3.11, windows.4xlarge, cpu) / windows-job	1m 44s
unittests-windows (3.8, windows.4xlarge, cpu) / windows-job	2m 18s
unittests-windows (3.8, windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job	24m 54s
unittests-windows (3.9, windows.4xlarge, cpu) / windows-job	2m 33s
	1h 11m 44s

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