public synchronized void removeSlf4jReporter() {
        if (null != slf4jReporter)
            slf4jReporter.stop();

        slf4jReporter = null;
    }
Stop a {@link Slf4jReporter} previously created by a call to
{@link #addSlf4jReporter(long, String)} and release it for GC. Idempotent
between calls to the associated add method. Does nothing before the first
call to the associated add method.
gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/util/MetricManager.java