Comment out unused JDK 11 related in dev/run-tests.py

    # set up java11 env if this is a pull request build with 'test-java11' in the title
    if "ghprbPullTitle" in os.environ:
        if "test-java11" in os.environ["ghprbPullTitle"].lower():
            os.environ["JAVA_HOME"] = "/usr/java/jdk-11.0.1"
            os.environ["PATH"] = "%s/bin:%s" % (os.environ["JAVA_HOME"], os.environ["PATH"])
            test_profiles += ["-Djava.version=11"]