Remove legacy picture recording

src/core/SkRTreePicture.cpp

Index: src/core/SkRTreePicture.cpp
diff --git a/src/core/SkRTreePicture.cpp b/src/core/SkRTreePicture.cpp
deleted file mode 100644
index a9118aeb5f346dfb157e75bbe6ba405136d91d48..0000000000000000000000000000000000000000
--- a/src/core/SkRTreePicture.cpp
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifdef SK_SUPPORT_LEGACY_DERIVED_PICTURE_CLASSES
-
-#include "SkRTreePicture.h"
-
-#include "SkRTree.h"
-
-SkBBoxHierarchy* SkRTreePicture::createBBoxHierarchy() const {
-    // These values were empirically determined to produce reasonable
-    // performance in most cases.
-    static const int kRTreeMinChildren = 6;
-    static const int kRTreeMaxChildren = 11;
-
-    SkScalar aspectRatio = SkScalarDiv(SkIntToScalar(fWidth),
-                                       SkIntToScalar(fHeight));
-    bool sortDraws = false;  // Do not sort draw calls when bulk loading.
-
-    return SkRTree::Create(kRTreeMinChildren, kRTreeMaxChildren,
-                           aspectRatio, sortDraws);
-}
-
-#endif