Revert "Bug: 21589105 Rescope WRITE_SETTINGS and SYSTEM_ALERT_WINDOW permission"

This reverts commit d6b404c72da7e2475508c7d5948494b2e9b1a262.

This CL seems to have broken the build, causing GMSCore to continuously
crash.

Bug: 22313634
Bug: 22312938
Bug: 22314605
Bug: 22308392
Bug: 22307889
4 files changed