[PATCH] urls: Remove references to Django < 1.11

[Stephen Finucane]

On Tue, 2018-09-04 at 20:15 +0100, Stephen Finucane wrote:
> This was missed in the recent "add support for Django 2.0" series.
> 
> Signed-off-by: Stephen Finucane <stephen at that.guru>

Applied.