minor refactoring

lib/dialects/sqlite/query.js

@@ -2,8 +2,6 @@ var Utils = require("../../utils")
 
 module.exports = (function() {
   var Query = function(database, callee, options) {
-    var self = this
-
     this.database = database
     this.callee = callee
     this.options = Utils._.extend({

lib/query-interface.js

@@ -37,7 +37,7 @@ module.exports = (function() {
 
       self.showAllTables().success(function(tableNames) {
         tableNames.forEach(function(tableName) {
-          chainer.add(self.sequelize.getQueryInterface().dropTable(tableName))
+          chainer.add(self.dropTable(tableName))
         })
         chainer
           .run()