6636368: XAtom contains unused code
Summary: unused code has been removed
Reviewed-by: dcherepanov
-export:JNI_GetDefaultJavaVMInitArgs
-export:JNI_CreateJavaVM
-export:JNI_GetCreatedJavaVMs
-export:jio_snprintf
-export:jio_printf
-export:jio_fprintf
-export:jio_vfprintf
-export:jio_vsnprintf