[quant] Removing unnecessary import from torch/quantization/quantize.py (#64910)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64910
This bled through from the original location. Removing it is not just refactoring, but also prevents potential recursive imports.
ghstack-source-id: 138112663
Test Plan: `buck test mode/dev //caffe2/test:quantization`
Reviewed By: vkuzo
Differential Revision: D30882924
fbshipit-source-id: 8652a334a5186c635761ea5e50f978d1f1078c12
