RegExp macro assembler clean up.

src/regexp-macro-assembler-tracer.h

Index: src/regexp-macro-assembler-tracer.h
diff --git a/src/regexp-macro-assembler-tracer.h b/src/regexp-macro-assembler-tracer.h
index ac262df76f4b0592177b18ba702d77a9957a62d4..852fb80417ba91fb49098dfb14aabc1e3a7dc5d5 100644
--- a/src/regexp-macro-assembler-tracer.h
+++ b/src/regexp-macro-assembler-tracer.h
@@ -49,11 +49,6 @@ class RegExpMacroAssemblerTracer: public RegExpMacroAssembler {
                                       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);
   virtual void CheckGreedyLoop(Label* on_tos_equals_current_position);
   virtual void CheckNotAtStart(Label* on_not_at_start);
   virtual void CheckNotBackReference(int start_reg, Label* on_no_match);