Remove DefaultContainerService and its references.

Pre-req for running tests marked with (*): adb shell setprop vold.has_adoptable 1

Bug: 111838160
Test: builds and flashes
*Test: atest cts.AdoptableHostTest
*Test: atest cts.StorageHostTest
Change-Id: Iaa376a6bc984cc449239b7fe54a4a2708ad05a72