Remove lifecycle 5.6 job
Remove lifecycle 5.6 job

- This env has been busted for some time, we're cutting our losses and removing it for now
[ci skip]

cloudfoundry-incubator/bosh-vcloud-cpi-release,cloudfoundry-incubator/bosh-vcloud-cpi-release,cloudfoundry-incubator/bosh-vcloud-cpi-release