These files were copied to Native/src but were kept around for
downstream projects that included them from their old locations.
Downstream projects have been updated so these can now be removed.
Bug: webrtc:8832
Change-Id: Ic28dc13e4b5bfced4b97ee872068683785d04bb3
Reviewed-on: https://webrtc-review.googlesource.com/47860
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Commit-Queue: Anders Carlsson <andersc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21892}