The ANGLE APK needs to be reverted back to just being a container
for the ANGLE shared object libraries, since the rest of the APK
contents are in the Android source tree.

Bug: angleproject:3154
Test: 'adb sync' the APK on to a device
Change-Id: Id245f1e3d269c71054d9759e8ba8be0532afe659
Reviewed-on: https://chromium-review.googlesource.com/c/1474341
Commit-Queue: Tim Van Patten <timvp@google.com>
Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>