[quant][graphmode][fx][api] Remove `inplace` option from prepare_fx (#46954)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/46954
Test Plan: Imported from OSS
Reviewed By: supriyar
Differential Revision: D24579401
fbshipit-source-id: adce623ce819fa220f7bb08d1ff3beaa69850621
