Remove the ability to turn off TimeDetectorService

Remove the ability to turn off TimeDetectorService. After
http://r.android.com/1000492 it will be required in all cases.

Also remove [Old|New]NetworkTimeUpdateService as the expected
changes have not been implemented.

Bug: 133492648
Test: build only
Change-Id: Iad7ff59b19fa54750831819c68b7b733e5763902
3 files changed