drop the version="" from setup.py, to avoid a pointless UserWarning

Signed-off-by: Mattia Rizzolo <mattia@debian.org>
2 jobs for live in 4 minutes and 8 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Test
passed #153788
stable-bpo

00:03:36

84.0%
passed #153787
unstable

00:04:08

84.0%