Remove unused window layout conditions

- No one sets FINISH_LAYOUT_REDO_CONFIG.
- mUpdateRotation is never true.
- Reduce wrapper method of performSurfacePlacement because
  it must be invoked from the only caller in real case.

Bug: 163976519
Flag: EXEMPT remove outdated code
Test: CtsWindowManagerDeviceActivity
Change-Id: I8c7dd18752cbefbc20a62d6625e99685b0e6a972