temporarily reenable string test for dialect check

This is completely broken anyway, these tests are being used to
conditionally report back false positives for transaction support.

test/associations/belongs-to.test.js

@@ -6,7 +6,8 @@ var chai      = require('chai')
   , Sequelize = require('../../index')
   , Promise   = Sequelize.Promise
   , assert    = require('assert')
-  , current   = Support.sequelize;
+  , current   = Support.sequelize
+  , dialect   = Support.getTestDialect();
 
 chai.config.includeStack = true
 

test/associations/has-many.test.js

@@ -10,7 +10,8 @@ var chai      = require('chai')
   , moment    = require('moment')
   , sinon     = require('sinon')
   , Promise   = Sequelize.Promise
-  , current   = Support.sequelize;
+  , current   = Support.sequelize
+  , dialect   = Support.getTestDialect();
 
 chai.config.includeStack = true;
 

test/associations/has-one.test.js

@@ -4,7 +4,8 @@ var chai      = require('chai')
   , Support   = require(__dirname + '/../support')
   , Sequelize = require('../../index')
   , Promise   = Sequelize.Promise
-  , current   = Support.sequelize;
+  , current   = Support.sequelize
+  , dialect   = Support.getTestDialect();
 
 chai.config.includeStack = true