[android][test_app] cleanup (#40136)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/40136
Test Plan: Imported from OSS
Differential Revision: D22084170
Pulled By: IvanKobzarev
fbshipit-source-id: f8d2d0494b3ac4f7fe2118238d621155d697d2c4
