Remove a few unused variables, functions, and member variables.

fpdfsdk/src/formfiller/FFL_TextField.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
 
 //#include "../include/FormFiller.h"
 //#include "../include/FFL_FormFiller.h"
 #include "../../include/formfiller/FFL_TextField.h"
 #include "../../include/formfiller/FFL_CBA_Fontmap.h"
 //#include "../include/FFL_Notify.h"
 
-CFFL_EditUndoItem::CFFL_EditUndoItem(CPWL_Edit* pEdit) : m_pEdit(pEdit)
+CFFL_EditUndoItem::CFFL_EditUndoItem(CPWL_Edit* pEdit)
 {
 }
 
 CFFL_EditUndoItem::~CFFL_EditUndoItem()
 {
 }
 
 void CFFL_EditUndoItem::Undo()
 {
 }
@@ skipping 379 matching lines @@
 
 void CFFL_TextField::DoPaste(CPDFSDK_Document* pDocument)
 {
 
 }
 
 void CFFL_TextField::OnAddUndo(CPWL_Edit* pEdit)
 {
 }