slider/whitefin/oriole/raven: remove redundant brightness config

This config_screenBrightnessNits/config_screenBrightnessBacklight are not used
when we have the displaydeviceconfig (ddc) exist in screenBrightnessMap.

Bug: 177140883
test: check brightness table
Change-Id: I7855602652a39288965e7510084d98d4d040312d
4 files changed