fix broken quantization_test in operator_benchmark (#53153)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53153
This diff is a fix for quantization_test in operator_benchmark, which is broken because of removing the py_module for learnable fake_quantization.
ghstack-source-id: 123103477
Test Plan: `buck run mode/opt //caffe2/benchmarks/operator_benchmark/pt:quantization_test`
Reviewed By: z-a-f
Differential Revision: D26764881
fbshipit-source-id: 8d40c6eb5e7090ca65f48982c837f7dc87d14378
