audiopolicy: Remove legacy audio_policy configuration

Remove the "template" configuration file and the header file.

Bug: 132435217
Test: make
Change-Id: I0b8ae921ac046e11b020d5766a60f9b341e1d6ee
Merged-In: I0b8ae921ac046e11b020d5766a60f9b341e1d6ee
3 files changed