Remove support for non existing x86 version of Ubuntu 20.04 LTS

6 jobs for master in 10 minutes and 4 seconds (queued for 27 seconds)
Status Name Job ID Coverage
  Build
passed bionic #66452
docker-build

00:05:24

passed disco #66451
docker-build

00:01:41

passed eoan #66450
docker-build

00:01:37

passed focal #66449
docker-build

00:03:06

passed trusty #66454
docker-build

00:05:13

passed xenial #66453
docker-build

00:05:49