Camera: Move CameraMetadata.h from service to client library

Change-Id: I940ce86f318f37ae5b73f912a6e589415150125f
diff --git a/services/camera/libcameraservice/Camera2Device.h b/services/camera/libcameraservice/Camera2Device.h
index 41df2e4..86ff80f 100644
--- a/services/camera/libcameraservice/Camera2Device.h
+++ b/services/camera/libcameraservice/Camera2Device.h
@@ -27,14 +27,12 @@
 #include <utils/Vector.h>
 
 #include "hardware/camera2.h"
-#include "camera2/CameraMetadata.h"
+#include "camera/CameraMetadata.h"
 
 namespace android {
 
 class Camera2Device : public virtual RefBase {
   public:
-    typedef camera2::CameraMetadata CameraMetadata;
-
     Camera2Device(int id);
 
     ~Camera2Device();