From looking at the relevant source code (arguments.cpp in openjdk, line 2492), there is no way to control the output of this message.
The only thing I could say is that it is printed to stderr. So you could wrap your commands to redirect stderr to /dev/null (if there wasn't anything else you cared about on stderr).
- Or write a
java wrapper script which filtered out this message.
- Or submit a feature request to the openjdk project, although this won't solve your immediate problem.