void removeClientProxy(CacheClientProxy proxy) {
    ClientProxyMembershipID client = proxy.getProxyID();
    _clientProxies.remove(client);
    _connectionListener.queueRemoved();
    getCache().cleanupForClient(this, client);
    if (!(proxy.clientConflation == Handshake.CONFLATION_ON)) {
      ClientHealthMonitor chm = ClientHealthMonitor.getInstance();
      if (chm != null) {
        chm.numberOfClientsWithConflationOff.decrementAndGet();
      }
    }
  }
Removes an existing {@code CacheClientProxy} from the list of known client proxies

@param proxy The {@code CacheClientProxy} to remove
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/CacheClientNotifier.java