[collectd] registering UnixSock as a write plugin

[Derek Wood]

Hi,
We use the UnixSock plugin exclusively to retrieve data from collectd.  Since we are not using RRD, etc, collectd hammers the syslog with the following message.  Is there any way to register UnixSock as a Write plugin or otherwise suppress these messages?

Mar 14 13:45:08 (none) collectd[12496]: Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status 2 (ENOENT). Most likely this means you didn't load any write plugins.
Mar 14 13:45:08  collectd[12496]: last message repeated 199 times
Mar 14 13:45:08 (none) rsyslogd-2177: imuxsock begins to drop messages from pid 12496 due to rate-limiting

package: collectd-4.10.1-2.1ubuntu7
OS: ubuntu 12:04

Thanks,
-Derek