Remove unused code.

xfa/fxbarcode/common/BC_CommonBitSource.h

Index: xfa/fxbarcode/common/BC_CommonBitSource.h
diff --git a/xfa/fxbarcode/common/BC_CommonBitSource.h b/xfa/fxbarcode/common/BC_CommonBitSource.h
deleted file mode 100644
index 7c6736cba39abe1593f8ece2874c5aee066776a8..0000000000000000000000000000000000000000
--- a/xfa/fxbarcode/common/BC_CommonBitSource.h
+++ /dev/null
@@ -1,28 +0,0 @@
-// 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
-
-#ifndef XFA_FXBARCODE_COMMON_BC_COMMONBITSOURCE_H_
-#define XFA_FXBARCODE_COMMON_BC_COMMONBITSOURCE_H_
-
-#include "core/fxcrt/include/fx_basic.h"
-#include "xfa/fxbarcode/utils.h"
-
-class CBC_CommonBitSource {
- public:
-  CBC_CommonBitSource(CFX_ByteArray* bytes);
-  ~CBC_CommonBitSource();
-
-  int32_t ReadBits(int32_t numBits, int32_t& e);
-  int32_t Available();
-  int32_t getByteOffset();
-
- private:
-  CFX_ByteArray m_bytes;
-  int32_t m_byteOffset;
-  int32_t m_bitOffset;
-};
-
-#endif  // XFA_FXBARCODE_COMMON_BC_COMMONBITSOURCE_H_