[bc25] Remove SceneFamilies.QuickSettings and associated resolver code.

Bug: 356596436
Flag: com.android.systemui.scene_container
Test: Existing unit tests still pass.
Test: Tested manually that Single and Split shades are still working
 by expanding and collapsing each on both Gone and Lockscreen.
Change-Id: I1e9acd72876053fd199c8dd650c0dd5b47473cff