dbr quant: clean up AutoQuantizationState.get_op_convert_info flag (#68345)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68345
Removes a flag to unwrap scale and zp which was only needed by
the FX rewriter. Moves the logic to happen in the FX tracer instead.
This resolves a technical debt TODO.
Test Plan:
```
python test/test_quantization.py TestQuantizeDBR
```
Reviewed By: jerryzh168
Differential Revision: D32463764
Pulled By: vkuzo
fbshipit-source-id: ba7c976664c95111174fb65488bdac62b4f4984d
pytorch
629f9a55 - dbr quant: clean up AutoQuantizationState.get_op_convert_info flag (#68345)
