New approach to override timeout max value

- Revert "Allow OEM customizing max screen timeout value."
- Use separate timeout list for screen timeout and lock timeout.

This reverts commit f57f490aa6eb62700078bef5d16d55e6176c9448.

Fixes: 113346164
Test: manual

Change-Id: Ifbb054c232c47455ae82e3ed817f9c1e96f694cf
7 files changed