Remove obsolete aggregating and non-working producers heap profilers.

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index e47ddfe0d11e64b8556c9cf1bbae6cecdefd2fc6..e473b020fd968c64d050ce9d808a4a4b5f5e75ec 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -1445,10 +1445,6 @@ Isolate::Isolate()
   debugger_ = NULL;
 #endif
 
-#ifdef ENABLE_LOGGING_AND_PROFILING
-  producer_heap_profile_ = NULL;
-#endif
-
   handle_scope_data_.Initialize();
 
 #define ISOLATE_INIT_EXECUTE(type, name, initial_value)                        \
@@ -1537,11 +1533,6 @@ void Isolate::SetIsolateThreadLocals(Isolate* isolate,
 Isolate::~Isolate() {
   TRACE_ISOLATE(destructor);
 
-#ifdef ENABLE_LOGGING_AND_PROFILING
-  delete producer_heap_profile_;
-  producer_heap_profile_ = NULL;
-#endif
-
   delete unicode_cache_;
   unicode_cache_ = NULL;
 
@@ -1657,11 +1648,6 @@ bool Isolate::PreInit() {
   regexp_stack_ = new RegExpStack();
   regexp_stack_->isolate_ = this;
 
-#ifdef ENABLE_LOGGING_AND_PROFILING
-  producer_heap_profile_ = new ProducerHeapProfile();
-  producer_heap_profile_->isolate_ = this;
-#endif
-
   state_ = PREINITIALIZED;
   return true;
 }