[ProviderModel] Internal cleanup, remove the Provider Model flag

Bug: 197066557
Test: atest TileServicesTest, atest TileQueryHelperTest, atest QSTileHostTest, atest NetworkControllerDataTest, atest NetworkControllerSignalTest
Change-Id: Ic88255873fe6ed8ac3e8b0a1368e9a7f480b09ff
17 files changed