Remove leftover declaration in isolate.h

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 0bea2544fa1b3dcf49c93ebbbbb16e06c6f03e44..372742b93779a15010825bdbde26ea64dcfca5be 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -701,8 +701,6 @@ class Isolate {
   MaybeHandle<JSReceiver> CaptureAndSetSimpleStackTrace(
       Handle<JSReceiver> error_object, Handle<Object> caller);
   Handle<JSArray> GetDetailedStackTrace(Handle<JSObject> error_object);
-  Handle<JSArray> GetDetailedFromSimpleStackTrace(
-      Handle<JSObject> error_object);
 
   // Returns if the given context may access the given global object. If
   // the result is false, the pending exception is guaranteed to be