Remove centralsurfaces activitystarter invocations

We want to ensure that ActivityStarterDelegate handles all activitystarter
invocations so that we can route these method to a separate class.

There should be no change in behavior as activitystarter delegate just
asks central surfaces to do these same invocations.

Bug: 278273334
Test: Unit tests
Test: Make sure it builds

Change-Id: I4af5b793ba9b8ab9091782cb17997039c8df2e4d