[FX] Garbage collect values in Interpreter (#54726)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/54726
Test Plan: Imported from OSS
Reviewed By: ansley
Differential Revision: D27341449
Pulled By: jamesr66a
fbshipit-source-id: 9dc5f9675ed197dee4a31c8b0e6276248378f1ea
