whole_func_string: function (plugin, callback){
      var cozyLight = require('./cozy-light');
      var config = configHelpers.getConfig();
      logger.info('Removing ' + plugin + '...');
  
      if (config.plugins[plugin] === undefined) {
        logger.error(plugin + ' is not installed.');
        nodeHelpers.invoke(callback, true);
  
      } else {
        var module = config.plugins[plugin].name;
        npmHelpers.uninstall(module, function removePluginFromConfig (err) {
  
          if (err) {
            logger.raw(err);
            logger.error('npm did not uninstall ' + plugin + ' correctly.');
            nodeHelpers.invoke(callback, err);
  
          } else {
            logger.info(plugin + ' successfully uninstalled.');
            pluginHelpers.stop(plugin, function(){
              pluginHelpers.unloadPlugin(plugin);
              configHelpers.watcher.one(callback);
              configHelpers.removePlugin(plugin);
            });
          }
        });
      }
    }
func_code_string: function (plugin, callback){
      var cozyLight = require('./cozy-light');
      var config = configHelpers.getConfig();
      logger.info('Removing ' + plugin + '...');
  
      if (config.plugins[plugin] === undefined) {
        logger.error(plugin + ' is not installed.');
        nodeHelpers.invoke(callback, true);
  
      } else {
        var module = config.plugins[plugin].name;
        npmHelpers.uninstall(module, function removePluginFromConfig (err) {
  
          if (err) {
            logger.raw(err);
            logger.error('npm did not uninstall ' + plugin + ' correctly.');
            nodeHelpers.invoke(callback, err);
  
          } else {
            logger.info(plugin + ' successfully uninstalled.');
            pluginHelpers.stop(plugin, function(){
              pluginHelpers.unloadPlugin(plugin);
              configHelpers.watcher.one(callback);
              configHelpers.removePlugin(plugin);
            });
          }
        });
      }
    }
func_documentation_string: Remove plugin from config and its source from node module folder.
  
  @param {String} plugin Plugin to remove.
  @param {Function} callback Termination.