[qunat][fx][bc-breaking] Remove "additional_quant_pattern" key from prepare_custom_config_dict (#75386)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/75386
This is now replaced with backend_config_dict, we don't want to expose the implementation detail to
users. We'll have docs for backend_config_dict later
Test Plan:
python test/test_quantization.py TestQuantizeFx
python test/test_quantization.py TestQuantizeFxOps
Imported from OSS
Reviewed By: ezyang
Differential Revision: D35451957
fbshipit-source-id: 52ebb5fb20cd96c1f21410b07c3d0c448c58cdba
(cherry picked from commit ccb38026f14644f9eb43335b7a7de5568c556394)
