fix(ci): Drop default KubevirtCI provider

Fix the kubevirtci was required because version 1.31 was the first
supporting s390x. Currently, the minimum version available is 1.32.
Therefore, this is not longer required and reduce maintenance efforts.

Signed-off-by: Javier Cano Cano <jcanocan@redhat.com>

Author: jcanocan

pipeline.sh

@@ -2,7 +2,6 @@
 
 set -e -o pipefail
 
-export KUBEVIRT_PROVIDER=${KUBEVIRT_PROVIDER:-k8s-1.31}
 FOCUS=${FOCUS:-centos-stream:9}
 
 make medius