Remove extraneous forced rejuvenations in code aging

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index d444355e4c2074987de5c18fee37548d174cce25..c5ab315ee97842158c8f2365c7f4fcf91fc57b37 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -7972,7 +7972,6 @@ void SharedFunctionInfo::InstallFromOptimizedCodeMap(JSFunction* function,
   ASSERT(code != NULL);
   ASSERT(function->context()->native_context() == code_map->get(index - 1));
   function->ReplaceCode(code);
-  code->MakeYoung();
 }
 
 
@@ -8841,14 +8840,6 @@ void Code::MakeCodeAgeSequenceYoung(byte* sequence) {
 }
 
 
-void Code::MakeYoung() {
-  byte* sequence = FindCodeAgeSequence();
-  if (sequence != NULL) {
-    PatchPlatformCodeAge(sequence, kNoAge, NO_MARKING_PARITY);
-  }
-}
-
-
 void Code::MakeOlder(MarkingParity current_parity) {
   byte* sequence = FindCodeAgeSequence();
   if (sequence != NULL) {