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

fpdfsdk/src/javascript/PublicMethods.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/javascript/JavaScript.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "../../include/javascript/JS_Define.h"
 #include "../../include/javascript/JS_Object.h"
@@ skipping 1056 matching lines @@
         if(!pEvent->m_pValue)
                 return FALSE;
         CFX_WideString& Value = pEvent->Value();        
         CFX_ByteString strValue = StrTrim(CFX_ByteString::FromUnicode(Value));
         
         if (strValue.IsEmpty()) return TRUE;
         
         int iDec = params[0];
         int iSepStyle = params[1];
         int iNegStyle = params[2];
-        int icurrStyle = params[3]; //it's no use!
+        // params[3] is iCurrStyle, it's not used.
         std::wstring wstrCurrency(params[4].operator CFX_WideString());
         FX_BOOL bCurrencyPrepend = params[5];
         
         if (iDec < 0) iDec = -iDec;
         
         if (iSepStyle < 0 || iSepStyle > 3)
                 iSepStyle = 0;
         
         if (iNegStyle < 0 || iNegStyle > 3)
                 iNegStyle = 0;
@@ skipping 1228 matching lines @@
                 nums.SetElement(nIndex,CJS_Value(isolate,(FX_LPCWSTR)sPart));   
         }
 
         if (nums.GetLength() > 0)
                 vRet = nums;
         else
                 vRet.SetNull();
 
         return TRUE;
 }