Removed some more imports/warnings useless after recent removals.

from django.contrib.formtools import preview, utils

from django.contrib.formtools.wizard import FormWizard

from django.test import TestCase

from django.test.utils import get_warnings_state, restore_warnings_state

from django.utils import unittest

from django.contrib.formtools.tests.wizard import *

    def setUp(self):

        super(PreviewTests, self).setUp()

        self.save_warnings_state()

        warnings.filterwarnings('ignore', category=DeprecationWarning,

                                module='django.contrib.formtools.utils')

        # Create a FormPreview instance to share between tests

        self.preview = preview.FormPreview(TestForm)

        input_template = '<input type="hidden" name="%s" value="%s" />'

        self.input = input_template % (self.preview.unused_name('stage'), "%d")

        self.test_data = {'field1':u'foo', 'field1_':u'asdf'}

    def tearDown(self):

        super(PreviewTests, self).tearDown()

        self.restore_warnings_state()

    def test_unused_name(self):

        """

        Verifies name mangling to get uniue field name.

"""

from __future__ import absolute_import

import StringIO

from optparse import make_option

import warnings

from django.core.exceptions import ImproperlyConfigured

from django.core.management import call_command

from django.test import simple

from django.test.simple import DjangoTestSuiteRunner, get_tests

from django.test.testcases import connections_support_transactions

from django.test.utils import get_warnings_state, restore_warnings_state

from django.utils import unittest

from django.utils.importlib import import_module