XFA: Remove dead code in CBC_BufferedImageLuminanceSource and friends.

xfa/src/fxbarcode/BC_BufferedImageLuminanceSource.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 // Original code is licensed as follows:
 /*
  * Copyright 2009 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 149 matching lines @@
       int32_t pixel = rgb[offset + x];
       int32_t luminance =
           (306 * ((pixel >> 16) & 0xFF) + 601 * ((pixel >> 8) & 0xFF) +
            117 * (pixel & 0xFF)) >>
           10;
       (*matirx)[offset + x] = (uint8_t)luminance;
     }
   }
   return matirx;
 }
-FX_BOOL CBC_BufferedImageLuminanceSource::IsCropSupported() {
-  return TRUE;
-}
-FX_BOOL CBC_BufferedImageLuminanceSource::IsRotateSupported() {
-  return TRUE;
-}
-CBC_LuminanceSource* CBC_BufferedImageLuminanceSource::Crop(int32_t left,
-                                                            int32_t top,
-                                                            int32_t width,
-                                                            int32_t height) {
-  return NULL;
-}
-CBC_LuminanceSource* CBC_BufferedImageLuminanceSource::RotateCounterClockwise(
-    int32_t& e) {
-  if (!IsRotateSupported())
-    e = BCExceptionRotateNotSupported;
-  return NULL;
-}