[ONNX] Move tests to test_pytorch_onnx_onnxruntime (#42684)
Summary:
Move tests to test_pytorch_onnx_onnxruntime from test_utility_fun
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42684
Reviewed By: smessmer
Differential Revision: D23480360
Pulled By: bzinodev
fbshipit-source-id: 8876ba0a0c3e1d7104511de7a5cca5262b32f574
