remove protobuf usage from mobile build (#25493)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/25493
remove protobuf usage from mobile build
Test Plan:
buck build //caffe2:torch
buck build -c 'protobuf.use_v3=true' -c 'project.ignore=true' fbsource//fbandroid/mode/dev_clang_asan //xplat/experimental/pytorch/predictor:predictor
Reviewed By: ljk53
Differential Revision: D17116846
fbshipit-source-id: d75e5f48e7eae960c0b5c7b8ef7f3359eb6ca4ec
