Fixed audio service crash due to missing library.

Audio policy service was crashing due to missing sound trigger library.
This library is not used but due to recent changes the audio HAL is
reset and thus causes the audio service to crash.

Bug: 157097833
Test: make installclean & make -j60
Test: run gcar emulator and verify the audio server does not crashes.
Change-Id: I2ffa0ab53a1d58b17439880cb5a39248567c446d
2 files changed