Revert "Creates an Android.bp with prebuilt_etc for permission XMLs."

This reverts commit 74b1fcbc.

Reason for revert: Broke build_test: https://android-build.googleplex.com/builds/submitted/7710164/build_test/latest/view/logs/build_error.log

Change-Id: I81811e0f1cc600a011666a0c46357c36ad7c8356