am 401a712e: IPowerManager: remove some unused methods.

Merge commit '401a712e3b3b41c77e79a130d7b07d653e18bcab' into eclair-mr2-plus-aosp

* commit '401a712e3b3b41c77e79a130d7b07d653e18bcab':
  IPowerManager: remove some unused methods.