powerstats: remove common data providers in specific directory

The common data providers will be moved to gs common directory. So
I removed them in this directory and used gs common library to get
the APIs.

Bug: 206576142
Test: dumpsys android.hardware.power.stats.IPowerStats/default
Change-Id: Ic4c1379af912fecb2e74c6c8303bf57f27e49246
Signed-off-by: Darren Hsu <[email protected]>
10 files changed