code: public static void removeStatsInstance(StatsInstance instance)
                      throws StatsFactoryException {
          if (tc.isEntryEnabled())
              Tr.entry(tc, new StringBuffer("removeStatsInstance:name=").append(instance.getName()).toString());
  
          StatsFactoryUtil.unRegisterStats((PmiModule) instance, instance.getMBean());
  
          if (tc.isEntryEnabled())
              Tr.exit(tc, "removeStatsInstance");
      }
docs: Removes a StatsInstance from the PMI tree. Note that any children under the instance will also be removed.
  If the instance is associated with a default CustomStats MBean, the MBean will be de-activated.
  
  @param instance StatsInstance to be removed
  @exception StatsFactoryException if error while removing Stats instance