qa_crowbarsetup: simplify code
qa_crowbarsetup: simplify code

we dont need the extra checks
since we disable ceph on Cloud5 without SLES12
and the error message was dead code anyway

aspiers/automation,vmoravec/automation,SUSE-Cloud/automation,vmoravec/automation,aspiers/automation,SUSE-Cloud/automation,aspiers/automation,gosipyan/automation,vmoravec/automation,vmoravec/automation,aspiers/automation,gosipyan/automation,gosipyan/automation,gosipyan/automation,SUSE-Cloud/automation,SUSE-Cloud/automation