Revert of [profiler] fix memory leak for code entries for runtime callstats.

src/profiler/profile-generator.h

Index: src/profiler/profile-generator.h
diff --git a/src/profiler/profile-generator.h b/src/profiler/profile-generator.h
index 38a0cf26e4f3eb531db2a943270afa5bfe97ada7..1b3cad6dc3ee7a2aa804103884d369ee769c9143 100644
--- a/src/profiler/profile-generator.h
+++ b/src/profiler/profile-generator.h
@@ -369,7 +369,6 @@
 class ProfileGenerator {
  public:
   ProfileGenerator(Isolate* isolate, CpuProfilesCollection* profiles);
-  ~ProfileGenerator();
 
   void RecordTickSample(const TickSample& sample);
 
@@ -382,7 +381,6 @@
   Isolate* isolate_;
   CpuProfilesCollection* profiles_;
   CodeMap code_map_;
-  std::vector<CodeEntry*> code_entries_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileGenerator);
 };