pytorch quantization ao migration phase 2: torch/jit (#65829)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/65829
Renames `torch.quantization` to `torch.ao.quantization` in `torch/jit` folder.
```
find caffe2/torch/jit/ -type f -name "*.py" -print0 | xargs -0 sed -i "s/torch\.quantization/torch.ao.quantization/g"
```
Test Plan: CI
Reviewed By: z-a-f
Differential Revision: D31273365
fbshipit-source-id: 350eb116148d91b967d428b54413caee4fd68438
