Removed an unnecessary models file in the admin_scripts tests.

from django.db import models

from django.utils.encoding import python_2_unicode_compatible

@python_2_unicode_compatible

class Article(models.Model):

    headline = models.CharField(max_length=100, default='Default headline')

    pub_date = models.DateTimeField()

    def __str__(self):

        return self.headline

    class Meta:

        ordering = ('-pub_date', 'headline')