Removed a useless UnmarshalJSON method

This method was doing nothing more than `json.Unmarshal`.

control/config.go

@@ -152,71 +152,6 @@ func GetDefaultConfig() *Config {
 	}
 }
 
-// UnmarshalJSON unmarshals valid json into a Config.  An example Config can be found
-// at github.com/intelsdi-x/snap/blob/master/examples/configs/snap-config-sample.json
-func (c *Config) UnmarshalJSON(data []byte) error {
-	// construct a map of strings to json.RawMessages (to defer the parsing of individual
-	// fields from the unmarshalled interface until later) and unmarshal the input
-	// byte array into that map
-	t := make(map[string]json.RawMessage)
-	if err := json.Unmarshal(data, &t); err != nil {
-		return err
-	}
-	// loop through the individual map elements, parse each in turn, and set
-	// the appropriate field in this configuration
-	for k, v := range t {
-		switch k {
-		case "max_running_plugins":
-			if err := json.Unmarshal(v, &(c.MaxRunningPlugins)); err != nil {
-				return fmt.Errorf("%v (while parsing 'control::max_running_plugins')", err)
-			}
-		case "plugin_load_timeout":
-			if err := json.Unmarshal(v, &(c.PluginLoadTimeout)); err != nil {
-				return fmt.Errorf("%v (while parsing 'control::plugin_load_timeout')", err)
-			}
-		case "plugin_trust_level":
-			if err := json.Unmarshal(v, &(c.PluginTrust)); err != nil {
-				return fmt.Errorf("%v (while parsing 'control::plugin_trust_level')", err)
-			}
-		case "auto_discover_path":
-			if err := json.Unmarshal(v, &(c.AutoDiscoverPath)); err != nil {
-				return fmt.Errorf("%v (while parsing 'control::auto_discover_path')", err)
-			}
-		case "keyring_paths":
-			if err := json.Unmarshal(v, &(c.KeyringPaths)); err != nil {
-				return fmt.Errorf("%v (while parsing 'control::keyring_paths')", err)
-			}
-		case "cache_expiration":
-			if err := json.Unmarshal(v, &(c.CacheExpiration)); err != nil {
-				return fmt.Errorf("%v (while parsing 'control::cache_expiration')", err)
-			}
-		case "plugins":
-			if err := json.Unmarshal(v, c.Plugins); err != nil {
-				return err
-			}
-		case "listen_addr":
-			if err := json.Unmarshal(v, &(c.ListenAddr)); err != nil {
-				return err
-			}
-		case "listen_port":
-			if err := json.Unmarshal(v, &(c.ListenPort)); err != nil {
-				return err
-			}
-		case "pprof":
-			if err := json.Unmarshal(v, &(c.Pprof)); err != nil {
-				return err
-			}
-		case "max_plugin_restarts":
-			if err := json.Unmarshal(v, &(c.MaxPluginRestarts)); err != nil {
-				return err
-			}
-		default:
-			return fmt.Errorf("Unrecognized key '%v' in global config file while parsing 'control'", k)
-		}
-	}
-	return nil
-}
-
 // NewPluginsConfig returns a map of *pluginConfigItems where the key is the plugin name.
 func NewPluginsConfig() map[string]*pluginConfigItem {
 	return map[string]*pluginConfigItem{}