Remove regexp caching.

src/ia32/codegen-ia32.h

Index: src/ia32/codegen-ia32.h
diff --git a/src/ia32/codegen-ia32.h b/src/ia32/codegen-ia32.h
index 4594b19ddd29615fd8389b98c2ab1897f6cf27e9..5a12e10ea5af025605c0683110f6934386b29668 100644
--- a/src/ia32/codegen-ia32.h
+++ b/src/ia32/codegen-ia32.h
@@ -697,11 +697,6 @@ class CodeGenerator: public AstVisitor {
   // Construct a RegExp exec result with two in-object properties.
   void GenerateRegExpConstructResult(ZoneList<Expression*>* args);
 
-  // Clone the result of a regexp function.
-  // Must be an object created by GenerateRegExpConstructResult with
-  // no extra properties.
-  void GenerateRegExpCloneResult(ZoneList<Expression*>* args);
-
   // Support for fast native caches.
   void GenerateGetFromCache(ZoneList<Expression*>* args);