Bug 36428: (QA follow-up) Remove filter_by_future

Bug 36428: (QA follow-up) Remove filter_by_future

I actually already started to remove this in another bug, but it makes
sense to do it here where we're introducing the 'active' filter.  I'm in
agreement that this should probably always have been an 'active' rather
than 'future' filtering.

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
(cherry picked from commit 39920e03f1b7975cfea71345279235b9e9f5ecbb)
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>