Removed dead stack printing code.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 3c55883a86aefa802031c5d1b38b1ba8d05236f3..1a481209d784cc430f1ddcf29ff95be222377ba4 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -716,10 +716,8 @@ class Isolate {
   }
 
   void PrintCurrentStackTrace(FILE* out);
-  void PrintStackTrace(FILE* out, char* thread_data);
   void PrintStack(StringStream* accumulator);
   void PrintStack(FILE* out);
-  void PrintStack();
   Handle<String> StackTraceString();
   NO_INLINE(void PushStackTraceAndDie(unsigned int magic,
                                       Object* object,
@@ -1239,7 +1237,6 @@ class Isolate {
 
   void InitializeThreadLocal();
 
-  void PrintStackTrace(FILE* out, ThreadLocalTop* thread);
   void MarkCompactPrologue(bool is_compacting,
                            ThreadLocalTop* archived_thread_data);
   void MarkCompactEpilogue(bool is_compacting,