Remove implicit cast from CFX_WideString to (const wchar_t*)

core/fxcrt/include/fx_string.h

Index: core/fxcrt/include/fx_string.h
diff --git a/core/fxcrt/include/fx_string.h b/core/fxcrt/include/fx_string.h
index 4b73551573f43edca7d0cdd1e6b962015b10aaac..9d7d66741bceb26ea55cd35513377d63e3551bb6 100644
--- a/core/fxcrt/include/fx_string.h
+++ b/core/fxcrt/include/fx_string.h
@@ -497,10 +497,6 @@ class CFX_WideString {
   // Note: Any subsequent modification of |this| will invalidate the result.
   const FX_WCHAR* c_str() const { return m_pData ? m_pData->m_String : L""; }
 
-  // Implicit conversion to C-style wide string -- deprecated.
-  // Note: Any subsequent modification of |this| will invalidate the result.
-  operator const FX_WCHAR*() const { return m_pData ? m_pData->m_String : L""; }
-
   // Explicit conversion to CFX_WideStringC.
   // Note: Any subsequent modification of |this| will invalidate the result.
   CFX_WideStringC AsStringC() const {