Cleanup env variable names

fpdfsdk/cpdfsdk_formfillenvironment.h

Index: fpdfsdk/cpdfsdk_formfillenvironment.h
diff --git a/fpdfsdk/cpdfsdk_formfillenvironment.h b/fpdfsdk/cpdfsdk_formfillenvironment.h
index e332ba3951deb0ebbc301b492957d89e45ffbe25..dd0e6bffe141973ef370b959cf96b12a4e1d774f 100644
--- a/fpdfsdk/cpdfsdk_formfillenvironment.h
+++ b/fpdfsdk/cpdfsdk_formfillenvironment.h
@@ -92,7 +92,6 @@ class CPDFSDK_FormFillEnvironment
   void ClearChangeMark() { m_bChangeMask = FALSE; }
 
   UnderlyingPageType* GetPage(int nIndex);
-  CPDFSDK_FormFillEnvironment* GetEnv() { return this; }
 
   void ProcJavascriptFun();
   FX_BOOL ProcOpenAction();
@@ -213,7 +212,6 @@ class CPDFSDK_FormFillEnvironment
   void JS_docgotoPage(int nPageNum);
 
   FX_BOOL IsJSInitiated() const { return m_pInfo && m_pInfo->m_pJsPlatform; }
-  CPDFSDK_FormFillEnvironment* GetSDKDocument() { return this; }
   CFX_ByteString GetAppName() const { return ""; }
   CFX_SystemHandler* GetSysHandler() const { return m_pSysHandler.get(); }
   FPDF_FORMFILLINFO* GetFormFillInfo() const { return m_pInfo; }