Part of Lychee cleanup in CP2.

Removed code to populate Lychee related columns in ContactsProvider2.
Removed code to notify Lychee sync adapter when there is metadata
change.

Test: Unit tests by asserting metadata_dirty not set and metadata
  network not notified. Manual tests by installing the apk to device
  and add/edit/delete contacts in Contacts App.
Bug: 146447263

Change-Id: Ibbc0b553d0ea05702223e77d8eab00b9d14cca92
2 files changed