re-enable external proguard parsing
re-enable external proguard parsing

Summary:
This was actually fixed by D8812702, so we can remove this broad fix now.

Should we promo this change to stable early? I know the video team wanted it sooner rather than later

Reviewed By: wsanville

Differential Revision: D8845559

fbshipit-source-id: e54acdaed4a5fefac663096b44dfbff412e31768

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