remove unused drawData

src/core/SkRecorder.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkRecorder.h"
 #include "SkPatchUtils.h"
 #include "SkPicture.h"
@@ skipping 315 matching lines @@
 }
 
 void SkRecorder::addComment(const char* key, const char* value) {
     APPEND(AddComment, this->copy(key), this->copy(value));
 }
 
 void SkRecorder::endCommentGroup() {
     APPEND(EndCommentGroup);
 }
 
-void SkRecorder::drawData(const void* data, size_t length) {
-    APPEND(DrawData, copy((const char*)data), length);
-}