Camera2: Replace MediaConsumer with BufferItemConsumer.

Get rid of MediaConsumer, which was largely duplicated code, and
replace it with the simpler BufferItemConsumer.

Bug: 6243944
Change-Id: I242d80c5fe39f2ee581ec8bb46f362997d994b0a
diff --git a/services/camera/libcameraservice/Android.mk b/services/camera/libcameraservice/Android.mk
index c14ae22..8cccf49 100644
--- a/services/camera/libcameraservice/Android.mk
+++ b/services/camera/libcameraservice/Android.mk
@@ -10,8 +10,7 @@
     CameraService.cpp \
     CameraClient.cpp \
     Camera2Client.cpp \
-    Camera2Device.cpp \
-    MediaConsumer.cpp
+    Camera2Device.cpp
 
 LOCAL_SHARED_LIBRARIES:= \
     libui \