--- a/src/jdk.jpackage/share/native/libapplauncher/Package.h	Mon Jan 07 16:43:30 2019 -0500
+++ b/src/jdk.jpackage/share/native/libapplauncher/Package.h	Tue Jan 08 07:37:14 2019 -0500
@@ -92,7 +92,6 @@
     void Initialize();
     void Clear();
     void FreeBootFields();
-    bool CheckForSingleInstance();
 
     void SetCommandLineArguments(int argc, TCHAR* argv[]);