audio: disable the audio proxy hal(mediashell) Bug: 329351565 Test: atest VtsHalAudioV7_1TargetTest Signed-off-by: Carter Hsu <[email protected]> (cherry picked from https://googleplex-android-review.googlesource.com/q/commit:bcef5e2c3fd4cb1c6b5c38a3be25cd95b31c3122) Merged-In: I9ce27a764a09b8d878d4d14ed956205000355610 Change-Id: I9ce27a764a09b8d878d4d14ed956205000355610