[skip ci] Change pretrained to false for quantization tests (#66795)
Summary:
Helps resolve a bit of https://github.com/pytorch/pytorch/issues/65439
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66795
Reviewed By: suo, jerryzh168
Differential Revision: D31732043
Pulled By: janeyx99
fbshipit-source-id: 10b71865fc937f9d72f2b1c04cbf3ea9a68c8818
