audio: Remove non-existing struct declarations

diff --git a/profiles/audio/device.h b/profiles/audio/device.h
index 2c98355..ad4dae5 100644 (file)
--- a/profiles/audio/device.h
+++ b/profiles/audio/device.h
@@ -25,10 +25,7 @@
 struct audio_device;
 struct source;
 struct control;
-struct target;
 struct sink;
-struct headset;
-struct gateway;
 struct dev_priv;
 
 typedef void (*audio_device_cb) (struct audio_device *dev, int err, void *data);