Modify unwind to comply with stack parser tools.

Bug: 14081592

Change-Id: I6906b2575c74d64f1c3ba7602779b3a789de1c69
diff --git a/runtime/utils.h b/runtime/utils.h
index 5def66b..6ab1013 100644
--- a/runtime/utils.h
+++ b/runtime/utils.h
@@ -382,7 +382,7 @@
 
 // Dumps the native stack for thread 'tid' to 'os'.
 void DumpNativeStack(std::ostream& os, pid_t tid, const char* prefix = "",
-    bool include_count = true, mirror::ArtMethod* current_method = nullptr)
+    mirror::ArtMethod* current_method = nullptr)
     NO_THREAD_SAFETY_ANALYSIS;
 
 // Dumps the kernel stack for thread 'tid' to 'os'. Note that this is only available on linux-x86.