Cleanup dependencies for the runner. (#2648)

Summary:
Pull Request resolved: https://github.com/pytorch/executorch/pull/2648

Some of the currently used deps are either coming transitively or are not part of what we distribute on iOS, and aren't actually needed, since only a specific subset is used.
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Reviewed By: manuelcandales

Differential Revision: D55317712

fbshipit-source-id: 4ca351679d306779de154828f0235129277615da