AudioSystem: remove obsolete method.

    static status_t getLatency(audio_io_handle_t output,

                               uint32_t* latency);

    static bool routedToA2dpOutput(audio_stream_type_t streamType);

    // return status NO_ERROR implies *buffSize > 0

    static status_t getInputBufferSize(uint32_t sampleRate, audio_format_t format,

        audio_channel_mask_t channelMask, size_t* buffSize);

    gAudioErrorCallback = cb;

}

bool AudioSystem::routedToA2dpOutput(audio_stream_type_t streamType)

{

    switch (streamType) {

    case AUDIO_STREAM_MUSIC:

    case AUDIO_STREAM_VOICE_CALL:

    case AUDIO_STREAM_BLUETOOTH_SCO:

    case AUDIO_STREAM_SYSTEM:

        return true;

    default:

        return false;

    }

}

// client singleton for AudioPolicyService binder interface

sp<IAudioPolicyService> AudioSystem::gAudioPolicyService;

sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient;