old_contents: from django.conf.urls import url
  from django.conf.urls import include
  from django.contrib import admin
  
  urlpatterns = [
      url(r'^admin/', admin.site.urls),
      url(r'^sms/', include('sms.urls')),
      url(r'^sims/', include('sims.urls')),
      url(r'^api/', include('api.urls')),
      url(r'^api-auth/', include('rest_framework.urls',
                                 namespace='rest_framework'))
  ]
  
new_contents: from django.conf.urls import url
  from django.conf.urls import include
  from django.contrib import admin
  
  urlpatterns = [
      url(r'^admin/', admin.site.urls),
      url(r'^sms/', include('sms.urls')),
      url(r'^sims/', include('sims.urls')),
  ]
  
subject: Remove references to API.