Revert "Use ThreadPrioritySetter to set thread priority"

Revert "Implement the ThreadPrioritySetter interface"

Revert submission 1194951-ThreadPrioritySetter2

Reason for revert: need to update new API
Reverted Changes:
Iee33a26c0: Implement the ThreadPrioritySetter interface
I71c5052be: Use ThreadPrioritySetter to set thread priority

Change-Id: I98cb32d5d216a83634d38406f574ee76e77daa97
5 files changed