minor correction to DJANGO_SETTINGS_MODULE ansible insertion

insertafter does not work and is probably useless anyway


Former-commit-id: cf751fe02bbf855e8cd495e7f79cfe66455decd8

ansible/deploy.yaml

@@ -80,7 +80,6 @@
     - name: add line in generated WSGI handler script to set DJANGO_SETTINGS_MODULE
       blockinfile:
         path: /etc/ippidb-80/handler.wsgi
-        insertafter: "os.environ['MOD_WSGI_SERVER_ALIASES'] = None or ''"
         content: |
           os.environ['DJANGO_SETTINGS_MODULE'] = 'ippisite.{{ ansible_hostname }}_settings'
     - name: create or update database