Cleanup code

Author: loay

lib/discovery.js

@@ -5,8 +5,6 @@
 
 'use strict';
 var g = require('strong-globalize')();
-var SqlConnector = require('loopback-connector').SqlConnector;
-var ParameterizedSQL = SqlConnector.ParameterizedSQL;
 
 module.exports = mixinDiscovery;