old_contents: 
  SECRET_KEY = 'some secret key'
  
  DATABASES = {'default': {'ENGINE': 'django.db.backends.sqlite3'}}
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'DIRS': [],
          'APP_DIRS': True,
      },
      {
          'BACKEND': 'django.template.backends.jinja2.Jinja2',
          'DIRS': [],
          'APP_DIRS': True,
      }
  ]
  
  INSTALLED_APPS = (
      'app',
  )
  
new_contents: 
  SECRET_KEY = 'some secret key'
  
  DATABASES = {'default': {'ENGINE': 'django.db.backends.sqlite3'}}
  
  TEMPLATES = [
      {
          'BACKEND': 'django.template.backends.django.DjangoTemplates',
          'DIRS': [],
          'APP_DIRS': True,
      },
  ]
  
  INSTALLED_APPS = (
      'app',
  )
  
subject: Remove Jinja2 template engine from test settings.