RegExp macro assembler clean up.

src/ia32/regexp-macro-assembler-ia32.h

Index: src/ia32/regexp-macro-assembler-ia32.h
diff --git a/src/ia32/regexp-macro-assembler-ia32.h b/src/ia32/regexp-macro-assembler-ia32.h
index 6040d8058ab5f817f09efc4d726d444aeabbd179..39333360077f0695b66dacc08ebd251657f3212d 100644
--- a/src/ia32/regexp-macro-assembler-ia32.h
+++ b/src/ia32/regexp-macro-assembler-ia32.h
@@ -52,10 +52,6 @@ class RegExpMacroAssemblerIA32: public NativeRegExpMacroAssembler {
                                       Label* on_equal);
   virtual void CheckCharacterGT(uc16 limit, Label* on_greater);
   virtual void CheckCharacterLT(uc16 limit, Label* on_less);
-  virtual void CheckCharacters(Vector<const uc16> str,
-                               int cp_offset,
-                               Label* on_failure,
-                               bool check_end_of_string);
   // A "greedy loop" is a loop that is both greedy and with a simple
   // body. It has a particularly simple implementation.
   virtual void CheckGreedyLoop(Label* on_tos_equals_current_position);