tox: Remove django 1.11 build
Django 2.2 is now the version used in production so let's gain some tests execution time by removing the django 1.11 build when using tox.
Migrated from D2976 (view on Phabricator)
Staging instance, all changes can be removed at any time
Django 2.2 is now the version used in production so let's gain some tests execution time by removing the django 1.11 build when using tox.
Migrated from D2976 (view on Phabricator)