diff --git a/mozilla/js2/src/stlcfg.h b/mozilla/js2/src/stlcfg.h
index 6369140923c..8dccf346a30 100644
--- a/mozilla/js2/src/stlcfg.h
+++ b/mozilla/js2/src/stlcfg.h
@@ -40,8 +40,6 @@
  
 #ifndef _WIN32
 // Microsoft Visual C++ 6.0 bug: standard identifiers should be in std namespace
-    using std::size_t;
-    using std::ptrdiff_t;
     using std::va_list;
     using std::strlen;
     using std::strcpy;
@@ -55,15 +53,12 @@
     using std::vsnprintf;
     using std::fprintf;
 #   define STD std
-#   define STATIC_CONST(type, expr) static const type expr
 #else
 #   define STD
     // Microsoft Visual C++ 6.0 bug: these identifiers should not begin with
     // underscores
 #   define snprintf _snprintf
 #   define vsnprintf _vsnprintf
- // Microsoft Visual C++ 6.0 bug: constants not supported
-#   define STATIC_CONST(type, expr) enum {expr}
 #endif
 
 using std::string;