Remove tempest-dsvm-ironic-pxe_ssh-{node} job
Remove tempest-dsvm-ironic-pxe_ssh-{node} job

This job is not actually used anywhere anymore.

Change-Id: Id263d64b3ee5cb568720332bbc11a804f0a4e3e4
Partial-Bug: #1570301

openstack-infra/project-config,openstack-infra/project-config