[quant][be] Remove unused APIs (#109342)
Summary:
att
Test Plan:
python test/test_quantization.py TestQuantizePT2E
Reviewers:
Subscribers:
Tasks:
Tags:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/109342
Approved by: https://github.com/kimishpatel, https://github.com/andrewor14
