Remove default implementation for PowerHal 1.1

Default implementation in powerHAL 1.1 is not used by any device
Devices using powerHal 1.1 have their own implementation in their
device/<vendor>/<devicename> while older devices don't use 1.1 at all.
This CL removes the default implementation for the PowerHAL 1.1

Bug: 65453628
Test: Build successfully (code not used anyway)
Merged-In: I695348683c6e2e504a523897082543274dc239aa

Change-Id: I695348683c6e2e504a523897082543274dc239aa
Signed-off-by: Ahmed ElArabawy <arabawy@google.com>