[Central Surfaces][Disable] Remove `old` from the disable logger.

2/3 locations were passing in `null` for `old`, and the third location
in CentralSurfacesCommandQueueCallbacks was using a simple Log.d that we
never look at in bug reports.

Bug: 277764509
Test: atest DisableFlagsLoggerTest
Change-Id: Ib2bc98053c801bb9af6e948945169481e3b16afa