CI: Remove Python 2 leftovers

Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
2 jobs for master in 5 minutes and 24 seconds (queued for 1 minute and 42 seconds)
Status Job ID Name Coverage
  Containers
passed #798716
containers:patchwork-testing

00:04:11

 
  Test
passed #798717
test

00:01:13