Remove graphics.cpp and friends

* Delete a bunch of code that isn't used in the O2 path

Bug: 36776792
Test: Compiled
Change-Id: I4adf6ec5678a53e0850229f9dda60e8687793376
diff --git a/libs/vr/libvrflinger/display_surface.h b/libs/vr/libvrflinger/display_surface.h
index 47a07f0..c456b10 100644
--- a/libs/vr/libvrflinger/display_surface.h
+++ b/libs/vr/libvrflinger/display_surface.h
@@ -5,7 +5,6 @@
 #include <pdx/service.h>
 #include <private/dvr/buffer_hub_queue_client.h>
 #include <private/dvr/display_protocol.h>
-#include <private/dvr/graphics_private.h>
 #include <private/dvr/ring_buffer.h>
 
 #include <functional>
@@ -162,6 +161,8 @@
   // The capacity of the pending buffer queue. Should be enough to hold all the
   // buffers of this DisplaySurface, although in practice only 1 or 2 frames
   // will be pending at a time.
+  static constexpr int kSurfaceBufferMaxCount = 4;
+  static constexpr int kSurfaceViewMaxCount = 4;
   static constexpr int kMaxPostedBuffers =
       kSurfaceBufferMaxCount * kSurfaceViewMaxCount;