XFA: bring fx_codec_fax in-line with master

core/include/fxcodec/fx_codec.h

Index: core/include/fxcodec/fx_codec.h
diff --git a/core/include/fxcodec/fx_codec.h b/core/include/fxcodec/fx_codec.h
index 8eacbb2e965dc75f9c2505eed7fcaa607399b9db..9b5e4f164139fd4da2bd4f49348f4bef19ef73a9 100644
--- a/core/include/fxcodec/fx_codec.h
+++ b/core/include/fxcodec/fx_codec.h
@@ -523,18 +523,6 @@ class CFX_DIBAttribute {
   std::map<FX_DWORD, void*> m_Exif;
 };
 
-FX_BOOL FaxSkipEOL(const uint8_t* src_buf, int bitsize, int& bitpos);
-FX_BOOL FaxGet1DLine(const uint8_t* src_buf,
-                     int bitsize,
-                     int& bitpos,
-                     uint8_t* dest_buf,
-                     int columns);
-FX_BOOL FaxG4GetRow(const uint8_t* src_buf,
-                    int bitsize,
-                    int& bitpos,
-                    uint8_t* dest_buf,
-                    const uint8_t* ref_buf,
-                    int columns);
 void FaxG4Decode(const uint8_t* src_buf,
                  FX_DWORD src_size,
                  int* pbitpos,