input(docker): Cleanup

* Removed leftovers, unused code

closes #957
fixes #645

CHANGELOG.md

@@ -8,6 +8,7 @@
 - [#968](https://github.com/influxdata/telegraf/issues/968): Processes plugin gets unknown state when spaces are in (command name)
 - [#969](https://github.com/influxdata/telegraf/pull/969): ipmi_sensors: allow : in password. Thanks @awaw!
 - [#972](https://github.com/influxdata/telegraf/pull/972): dovecot: remove extra newline in dovecot command. Thanks @mrannanj!
+- [#645](https://github.com/influxdata/telegraf/issues/645): docker plugin i/o error on closed pipe. Thanks @tripledes!
 
 ## v0.12.0 [2016-04-05]
 

plugins/inputs/docker/docker.go

@@ -149,8 +149,6 @@ func (d *Docker) gatherInfo(acc telegraf.Accumulator) error {
 		map[string]string{"unit": "bytes"},
 		now)
 	// Get storage metrics
-	//driverStatusRaw := []byte(info.DriverStatus)
-	//json.Unmarshal(driverStatusRaw, &driverStatus)
 	for _, rawData := range info.DriverStatus {
 		// Try to convert string to int (bytes)
 		value, err := parseSize(rawData[1])