Cleanup code behind flag calling hidden api

We would require to stop hidden api calls from module.
For the files in module:
1. Cleaning up refactorCrashrecovery flag completely.
2. Cleaning up deprecateFlagsAndSettingsResets partially.

Bug:289203818
Test: TH
Flag:EXEMPT cleanup
Change-Id: Idf3d00e9a704c1cd6d0f43918f38cd8a79261826