Remove regexp caching.

src/full-codegen.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1207 matching lines @@
 
 
 int FullCodeGenerator::TryCatch::Exit(int stack_depth) {
   // The macros used here must preserve the result register.
   __ Drop(stack_depth);
   __ PopTryHandler();
   return 0;
 }
 
 
-void FullCodeGenerator::EmitRegExpCloneResult(ZoneList<Expression*>* args) {
-  ASSERT(args->length() == 1);
-  VisitForStackValue(args->at(0));
-  __ CallRuntime(Runtime::kRegExpCloneResult, 1);
-  context()->Plug(result_register());
-}
-
 #undef __
 
 
 } }  // namespace v8::internal