Refactor more tests to use promises and remove unused async from tests

test/integration/include.test.js

@@ -7,7 +7,6 @@ var chai = require('chai')
   , Support = require(__dirname + '/support')
   , DataTypes = require(__dirname + '/../../lib/data-types')
   , datetime = require('chai-datetime')
-  , async = require('async')
   , _ = require('lodash')
   , dialect = Support.getTestDialect();
 

test/integration/include/find.test.js

@@ -6,8 +6,7 @@ var chai = require('chai')
   , Sequelize = require(__dirname + '/../../../index')
   , Promise = Sequelize.Promise
   , DataTypes = require(__dirname + '/../../../lib/data-types')
-  , datetime = require('chai-datetime')
-  , async = require('async');
+  , datetime = require('chai-datetime');
 
 chai.use(datetime);
 chai.config.includeStack = true;

test/integration/model/findAll/order.test.js

@@ -10,7 +10,6 @@ var chai = require('chai')
   , datetime = require('chai-datetime')
   , _ = require('lodash')
   , moment = require('moment')
-  , async = require('async')
   , current = Support.sequelize;
 
 chai.use(datetime);