[legacy sf flag] - setInitialValuesForClone

Removing legacy SurfaceFlinger frontend flag makes
Layer#setInitialValuesForClone a no-op. The method can be
removed and createClone can be cleaned up.

Bug: b/330785038
Test: presubmit
Change-Id: I912e5dd0e0723e5d1b5d1f0080bf23e06281dba8
4 files changed