[SR] Release reference to JIT module if possible (#67911)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67911
If we can remove `self` from the graph inputs, there is no need for `StaticModule` to hold onto its `Module` reference anymore.
Test Plan: `buck test caffe2/benchmarks/static_runtime:static_runtime_cpptest`
Reviewed By: hlu1
Differential Revision: D32190755
fbshipit-source-id: 9c4649a63b6e68c7d2e47395a23572985d2babb1
