Remove non-ascii character from torch/onnx/symbolic_opset11.py
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/31814
Reviewed By: houseroad
Differential Revision: D19270742
Pulled By: bddppq
fbshipit-source-id: 80800d588e63701d6e1b5838d7ada993f0246a81
