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)
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)